Termite pheromone slow-release powder and powder-spraying synergistic trapping and killing method for termites in deep positions of large buildings

Abstract

The invention discloses termite pheromone slow-release powder and a powder-spraying synergistic trapping and killing method for termites deep in a large building, and belongs to the technical field of termite killing, and the termite pheromone slow-release powder comprises termite pheromone, a phagostimulant and a porous adsorption material with the water content smaller than or equal to 0.001%. According to the termite pheromone slow-release powder and the synergistic trapping and killing method, the termite pheromone slow-release powder capable of attracting termites deep in a building and the synergistic trapping and killing method are provided on the basis of the termite biological ecological principle, the termite pheromone slow-release powder and a termite killing agent are combined for use, and the termites in the building can be killed by adjusting airflow pressure. Slow-release powder or termite trapping and killing powder containing termite pheromone is flushed into a termite activity area in the deep position of a building for several times to form a termite pheromone concentration gradient which is increased from inside to outside in a gradient mode, then a termite trapping and killing bag is placed at an outlet to attract termites to move outwards to eat enough termite killing agents, and synergistic killing and treatment of the termites in the deep position of the building are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of termite control, and specifically discloses a termite pheromone slow-release powder and a powder spraying synergistic killing method for termites deep in a large building. Background Art

[0002] Rhinotermitidae includes Reticulitermes Reticuliterems , Coptotermes Coptotermes etc. are the main types of termites that harm housing buildings around the world. With the emergence of more and more large buildings, these large buildings often have relatively deep wooden structures that can breed termite damage. Many of these deep wooden structures are introduced during the construction process and are gradually wrapped as the building's periphery is constructed. Although termites generally cannot enter the deep part of the building to cause damage, in areas with abundant termite sources, if these original wooden structures are not thoroughly cleaned when used in buildings, they may have been invaded by termites in the early stages of construction but have not been discovered. As the building is formed as a whole, the deep ant nests form large nests under suitable conditions, and due to the influence of the building structure, general termite control methods are difficult to effectively control, which can easily become the main hazard affecting building safety. In addition, some wood fiber structures throughout the entire building are invaded by external termites and colonized into nests. If they are not handled in time, the ant damage will spread to the depths, and the agents of ordinary control methods cannot reach the deep ant nests for control. Similarly, in residential building structures, there are also some cases where termite damage is deep in the building and difficult to completely control. Summary of the invention

[0003] The technical problem to be solved by the present invention is that the existing control methods and control agents cannot reach deep inside buildings to control termites in deep inside buildings. A termite pheromone slow-release powder and a powder spraying and synergistic killing method for termites in deep inside large buildings are provided.

[0004] In order to solve the above technical problems, the present invention provides a termite pheromone slow-release powder, comprising termite pheromone, an attractant and a slow-release carrier, wherein the weight ratio of the termite pheromone to the attractant is (1-10): (1-5), and the mass-volume ratio of the termite pheromone to the slow-release carrier is 0.01-10000 ng / mL.

[0005] Preferably, the termite pheromone is (cis, cis, trans)-3,6,8-dodecatrienol-1 (DTE) with an isomer purity of 95.0-99.9%, the attractant is hydroquinone, and the sustained-release carrier is a porous material with a moisture content of ≤0.001%.

[0006] Preferably, the porous material is activated carbon powder, fly ash, silica gel powder or cellulose powder with a mesh size of 20 to 200.

[0007] The present invention adopts the mixture of building termite sex pheromone DTE and attractant. In addition to having the attractant effect, hydroquinone is also a stabilizer and antioxidant, which can enhance the stability of DTE. The termite information slow-release powder prepared by mixing the two together with a slow-release carrier can release pheromone for a long time to lure termites deep in the building to go out for food. The powder is required to be free of moisture and adhesion, and the powder is sprayed evenly under various pressures without rapid sedimentation. The particle size of the powder must also match the depth of the ant nest to ensure that the powder can reach the ant nests at various depths with the airflow.

[0008] In order to solve the above technical problems, the present invention also provides a method for killing termites deep in a large building by spraying powder, which comprises the following steps: (1) Take an appropriate amount of 30-50 mesh cellulose powder and a termite killer and mix them evenly to prepare a cellulose killer powder, wherein the content of the termite killer is 0.5-2 wt%; (2) The cellulose killing powder of step (1) and the termite pheromone slow-release powder are compounded in a weight ratio of 1: (10-20) to form a termite killing powder; (3) diluting the termite pheromone slow-release powder 10 times with the same adsorption material for later use; (4) placing a termite trapping bag at the entrance of a building gap, wherein the termite trapping bag contains the cellulose killing powder prepared in step (1); (5) spraying the diluted termite pheromone slow-release powder in step (3) or the compound termite trapping powder in step (2) through the gaps in the building into the termite activity area deep in the building by means of high-pressure airflow; (6) The termite-killing powder prepared in step (2) is sprayed into the building through the gaps of the building by means of low-pressure airflow, thereby forming a termite pheromone concentration gradient that gradually increases from the inside to the outside of the building gap, thereby attracting termites deep in the building to go out and feed on a sufficient amount of termite killer.

[0009] Specifically, the pressure of the high-pressure airflow in step (5) is 1 to 5 atm, and the pressure of the low-pressure airflow in step (6) is 1 / 5 to 1 / 2 of the pressure of the high-pressure airflow. Preferably, the termite killer is hexaflumuron.

[0010] The method of the present invention uses a high-flow rate powder sprayer that can provide 1-5 atm pressure and is adjustable. The termite pheromone slow-release powder or the termite trapping powder containing the termite pheromone is rushed into the termite activity area deep in the building at a depth of 2.0-10.0 m by high-pressure airflow, and then the cellulose killing powder or the termite trapping powder containing the termite killer is rushed into the building gap by low-pressure airflow, so as to form a termite pheromone concentration gradient that increases from the inside to the outside, attracting termites to move outside to eat a sufficient amount of the termite killer, and achieving synergistic killing. The speed and depth of the airflow are matched to ensure that when the termite pheromone slow-release powder is sprayed into the building, the termite pheromone slow-release powder can reach the termite nest area, and the deeper the airflow pressure and speed requirements are, the higher the termite nest depth is. The termite pheromone slow-release powder injection point is selected as the exposed point with traces of termite activity. The ant nest depth is obtained by inferring the original building construction plan.

[0011] Due to the adoption of the above technical solution, the beneficial effects of the present invention are: The present invention starts from the biological ecology principle of termites, provides a termite pheromone slow-release powder that can attract termites from deep inside a building, and combines the pheromone slow-release agent with a termite killer agent, uses a high-pressure airflow to carry the termite pheromone slow-release powder, sprays it into a building gap structure, and then uses a low-pressure airflow to carry the termite killer agent. By controlling the airflow injection pressure and injection time, a termite pheromone concentration gradient that gradually increases from the inside to the outside is formed in the building gap, thereby attracting termites from deep inside to move out to feed on the termite killer agent, and then a termite trap bag is placed at the exit for the lured termites to feed on, thereby achieving the purpose of killing termites in the deep inside of the building. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of the termite pheromone concentration gradient formed in the building gap in Example 2; Figure 2 This is the anatomy of the termite matrix after termite extermination; Figure 3 This is a schematic diagram of the change in termite pheromone concentration formed in the building gap in Example 3. DETAILED DESCRIPTION

[0013] The present invention will be further described below in conjunction with specific implementation modes.

[0014] Example 1 The present embodiment provides a termite pheromone sustained-release powder, wherein 3 parts by weight of the building termite pheromone component (cis, cis, trans)-3,6,8-dodecatrienol-1 original drug with an isomer purity of 99% and 1 part by weight of hydroquinone are dissolved and mixed with each other, and then mixed with dry cellulose powder with a moisture content of 50 mesh ≤0.001% at a mass volume fraction of 1 μg / mL to prepare a sustained-release powder.

[0015] Example 2 This embodiment provides a method for spraying powder to enhance the effectiveness of trapping and killing termites deep in a large building, comprising the following steps: (1) Take an appropriate amount of 50-mesh cellulose powder and the termite killer hexaflumuron and mix them evenly to prepare a cellulose killer powder, wherein the content of hexaflumuron is 0.5 wt%; (2) The cellulose killing powder of step (1) and the termite pheromone slow-release powder of Example 1 are compounded in a weight ratio of 1:10 to form a termite killing powder; (3) diluting the termite pheromone slow-release powder of Example 1 by 10 times with 50-mesh cellulose powder for later use; (4) placing a 50 g termite-killing bag containing the cellulose killing powder prepared in step (1) at the entrance of the building gap; (5) Adjust the pressure of the powder sprayer (pressure-adjustable high-flow powder sprayer) to 3 atm, and use high-pressure airflow to spray the termite pheromone slow-release powder diluted 10 times in step (3) through the gaps in the building into the termite activity area deep in the building. The powder spraying speed is 2 m / s, and the termite pheromone slow-release powder successfully reaches the ant nest at a depth of 4 m. (6) Adjust the pressure of the powder sprayer to 1.5 atm, and use low-pressure airflow to spray the termite-killing powder prepared in step (2) into the building through the building gaps at a powder spraying speed of 1 m / s, thereby forming a termite pheromone concentration gradient that gradually increases from the inside to the outside of the building gaps, such as Figure 1 As shown, termites deep inside the building are attracted to go out and feed on a sufficient amount of the termite killer hexaflumuron.

[0016] Two months after treatment, the termite traps were found to have been eaten, no new termite activity sites appeared at the infested areas, and no living termites were found in the original infested matrix. Figure 2 As shown, it shows that the ant nest deep in the building was successfully killed.

[0017] Example 3 This embodiment provides a method for spraying powder to enhance the effectiveness of trapping and killing termites deep in a large building, comprising the following steps: (1) Take an appropriate amount of 50-mesh cellulose powder and the termite killer hexaflumuron and mix them evenly to prepare a cellulose killer powder, wherein the content of hexaflumuron is 0.5 wt%; (2) The cellulose killing powder of step (1) and the termite pheromone slow-release powder of Example 1 are compounded in a weight ratio of 1:10 to form a termite killing powder; (3) placing a 50 g termite-killing bag containing the cellulose-killing powder prepared in step (1) at the entrance of the building gap; (4) The pressure of the powder sprayer was adjusted to 3 atm, and the termite killing powder prepared in step (2) was sprayed through the gaps in the building into the termite activity area deep in the building using high-pressure airflow. The spraying speed was 2 m / s, and the termite pheromone slow-release powder successfully reached the ant nest at a depth of 4 m. (5) Adjust the pressure of the powder sprayer to 1.5 atm, and use low-pressure airflow to spray the termite-killing powder into the building through the building gaps again. The powder spraying speed is 1 m / s, thereby forming a termite pheromone concentration gradient that gradually increases from the inside to the outside in the building gaps, attracting termites deep in the building to go out and feed on a sufficient amount of the termite killer fluazifop-curonium.

[0018] An inspection two months after the treatment showed that the termite traps had been eaten, and no new termite activity points appeared in the infested areas. No living termites were found in the dissection of the original infested matrix, indicating that the ant nest deep in the building was successfully destroyed.

[0019] Example 4 The present embodiment provides a termite pheromone sustained-release powder, wherein 3 parts by weight of the building termite pheromone component (cis, cis, trans)-3,6,8-dodecatrienol-1 original drug with an isomer purity of 90% and 1 part by weight of hydroquinone are dissolved and mixed with each other, and then mixed with 50-mesh dry cellulose powder with a moisture content of ≤0.001% at a mass volume fraction of 2 μg / mL to prepare a sustained-release powder.

[0020] Example 5 This embodiment provides a method for spraying powder to enhance the effectiveness of trapping and killing termites deep in a large building, comprising the following steps: (1) Take an appropriate amount of 50-mesh cellulose powder and the termite killer hexaflumuron and mix them evenly to prepare a cellulose killer powder, wherein the content of hexaflumuron is 0.5 wt%; (2) The cellulose killing powder of step (1) and the termite pheromone slow-release powder of Example 4 are compounded in a weight ratio of 1:20 to form a termite killing powder; (3) diluting the termite pheromone slow-release powder of Example 4 by 10 times with 50-mesh cellulose powder for later use; (4) placing a 50 g termite-killing bag containing the cellulose killing powder prepared in step (1) at the entrance of the building gap; (5) Adjust the pressure of the powder sprayer to 3 atm, and use high-pressure airflow to spray the termite pheromone slow-release powder diluted 10 times in step (3) through the gaps in the building into the termite activity area deep in the building. The spraying speed is 2 m / s, and the termite pheromone slow-release powder successfully reaches the ant nest at a depth of 4 m. (6) The pressure of the powder sprayer is adjusted to 1.5 atm, and the termite-killing powder prepared in step (2) is sprayed into the building through the gaps of the building using a low-pressure airflow at a powder spraying speed of 1 m / s, thereby forming a termite pheromone concentration gradient that gradually increases from the inside to the outside of the building gap, thereby attracting termites deep in the building to go out and feed on a sufficient amount of the termite killer hexaflumuron.

[0021] An inspection two months after the treatment showed that the termite traps had been eaten, and no new termite activity points appeared in the infested areas. No living termites were found in the dissection of the original infested matrix, indicating that the ant nest deep in the building was successfully destroyed.

[0022] Example 6 This embodiment provides a method for spraying powder to enhance the effectiveness of trapping and killing termites deep in a large building, comprising the following steps: (1) Take an appropriate amount of 50-mesh cellulose powder and the termite killer hexaflumuron and mix them evenly to prepare a cellulose killer powder, wherein the content of hexaflumuron is 0.5 wt%; (2) The cellulose killing powder of step (1) and the termite pheromone slow-release powder of Example 4 are compounded in a weight ratio of 1:20 to form a termite killing powder; (3) placing a 50 g termite-killing bag containing the cellulose-killing powder prepared in step (1) at the entrance of the building gap; (4) The pressure of the powder sprayer was adjusted to 3 atm, and the termite killing powder prepared in step (2) was sprayed through the gaps in the building into the termite activity area deep in the building using high-pressure airflow. The spraying speed was 2 m / s, and the termite pheromone slow-release powder successfully reached the ant nest at a depth of 4 m. (5) Adjust the pressure of the powder sprayer to 1.5 atm, and use low-pressure airflow to spray the termite-killing powder into the building through the building gaps again. The powder spraying speed is 1 m / s, thereby forming a termite pheromone concentration gradient that gradually increases from the inside to the outside in the building gaps, attracting termites deep in the building to go out and feed on a sufficient amount of the termite killer fluazifop-curonium.

[0023] An inspection two months after the treatment showed that the termite traps had been eaten, and no new termite activity points appeared in the infested areas. No living termites were found in the dissection of the original infested matrix, indicating that the ant nest deep in the building was successfully destroyed.

[0024] Example 7 The present embodiment provides a termite pheromone sustained-release powder, wherein 3 parts by weight of the building termite pheromone component (cis, cis, trans)-3,6,8-dodecatrienol-1 original drug with an isomer purity of 90% and 1 part by weight of hydroquinone are dissolved and mixed with each other, and then mixed with 40-mesh dry cellulose powder with a moisture content of ≤0.001% at a mass volume fraction of 2 μg / mL to prepare a sustained-release powder.

[0025] Example 8 This embodiment provides a method for spraying powder to enhance the effectiveness of trapping and killing termites deep in a large building, comprising the following steps: (1) Take an appropriate amount of 30-mesh cellulose powder and the termite killer hexaflumuron and mix them evenly to prepare a cellulose killer powder, wherein the content of hexaflumuron is 0.5 wt%; (2) The cellulose killing powder of step (1) and the termite pheromone slow-release powder of Example 7 are compounded in a weight ratio of 1:20 to form a termite killing powder; (3) diluting the termite pheromone slow-release powder of Example 7 by 10 times with 40-mesh cellulose powder for later use; (4) placing a 50 g termite-killing bag containing the cellulose killing powder prepared in step (1) at the entrance of the building gap; (5) Adjust the pressure of the powder sprayer (pressure-adjustable high-flow powder sprayer) to 3 atm, and use high-pressure airflow to spray the termite pheromone slow-release powder diluted 10 times in step (3) through the gaps in the building into the termite activity area deep in the building. The powder spraying speed is 2 m / s, and the termite pheromone slow-release powder successfully reaches the ant nest at a depth of 4 m. (6) The pressure of the powder sprayer is adjusted to 1.5 atm, and the termite-killing powder prepared in step (2) is sprayed into the building through the gaps of the building using a low-pressure airflow at a powder spraying speed of 1 m / s, thereby forming a termite pheromone concentration gradient that gradually increases from the inside to the outside of the building gap, thereby attracting termites deep in the building to go out and feed on a sufficient amount of the termite killer hexaflumuron.

[0026] An inspection two months after the treatment showed that the termite traps had been eaten, and no new termite activity points appeared in the infested areas. No living termites were found in the dissection of the original infested matrix, indicating that the ant nest deep in the building was successfully destroyed.

[0027] Example 9 This embodiment provides a method for spraying powder to enhance the effectiveness of trapping and killing termites deep in a large building, comprising the following steps: (1) Take an appropriate amount of 30-mesh cellulose powder and the termite killer hexaflumuron and mix them evenly to prepare a cellulose killer powder, wherein the content of hexaflumuron is 0.5 wt%; (2) The cellulose killing powder of step (1) and the termite pheromone slow-release powder of Example 7 are compounded in a weight ratio of 1:20 to form a termite killing powder; (3) placing a termite trapping bag at the entrance of a building gap, wherein the termite trapping bag contains the cellulose killing powder prepared in step (1); (4) Adjust the pressure of the powder sprayer (pressure-adjustable high-flow powder sprayer) to 3 atm, and use high-pressure airflow to spray the termite-killing powder prepared in step (2) through the gaps in the building into the termite activity area deep in the building. The powder spraying speed is 2 m / s, and the termite pheromone slow-release powder successfully reaches the ant nest at a depth of 4 m. (5) Adjust the pressure of the powder sprayer to 1.5 atm, and use low-pressure airflow to spray the termite-killing powder into the building through the building gaps again. The powder spraying speed is 1 m / s, thereby forming a termite pheromone concentration gradient that gradually increases from the inside to the outside in the building gaps, attracting termites deep in the building to go out and feed on a sufficient amount of the termite killer fluazifop-curonium.

[0028] An inspection two months after the treatment showed that the termite traps had been eaten, and no new termite activity points appeared in the infested areas. No living termites were found in the dissection of the original infested matrix, indicating that the ant nest deep in the building was successfully destroyed.

[0029] Comparative Example 1 A method for killing termites deep in a large building comprises the following steps: (1) Take an appropriate amount of 50-mesh cellulose powder and the termite killer hexaflumuron and mix them evenly to prepare a cellulose killer powder, wherein the content of hexaflumuron is 0.5 wt%; (2) placing a 50 g termite-killing bag containing the cellulose killing powder prepared in step (1) at the entrance of the building gap; (3) The pressure of the powder sprayer was adjusted to 1.5 atm, and the cellulose-killing powder prepared in step (2) was sprayed into the building through the gaps in the building using a low-pressure airflow. The spraying speed was 1 m / s, and the cellulose-killing powder successfully reached the ant nest at a depth of 2 m.

[0030] During the inspection 2 months after the treatment, no termites had taken food from the termite traps, and a large number of new termite activity points appeared at the infested areas, indicating that the ant nest deep in the building had not been destroyed. The reason may be that there was no attraction from termite pheromones and the termites did not go out.

[0031] Comparative Example 2 3 parts by weight of the building termite pheromone component (cis, cis, trans)-3,6,8-dodecatrienol-1 original drug with an isomer purity of 90% and 1 part by weight of hydroquinone were dissolved and mixed with each other, and then mixed with 40 mesh dry cellulose powder with a moisture content of ≤0.001% at a mass volume fraction of 0.001 μg / mL to prepare the termite pheromone sustained-release powder.

[0032] A method for killing termites deep in a large building comprises the following steps: (1) Take an appropriate amount of 40-mesh cellulose powder and a termite killer, hexaflumuron, and mix them evenly to prepare a cellulose killer powder, wherein the content of hexaflumuron is 0.5 wt%; (2) The cellulose killing powder of step (1) and the termite pheromone slow-release powder are compounded in a weight ratio of 1:20 to form a termite killing powder; (3) placing a 50 g termite-killing bag containing the cellulose-killing powder prepared in step (1) at the entrance of the building gap; (4) The pressure of the powder sprayer was adjusted to 3 atm, and the termite-killing powder prepared in step (2) was sprayed into the building through the gaps in the building using high-pressure airflow. The spraying speed was 2 m / s, and the cellulose-killing powder successfully reached the ant nest at a depth of 3 m.

[0033] During the inspection 2 months after the treatment, it was found that the termite killing powder had taken a small amount of food, and a large number of new termite activity points appeared at the infested area, indicating that the ant nest deep in the building had not been killed. The reason may be that the termite pheromone content in the termite killing powder is relatively low, which is not enough to attract a large number of termites to go out.

[0034] Comparative Example 3 A method for killing termites deep in a large building comprises the following steps: (1) Take an appropriate amount of 50-mesh cellulose powder and the termite killer hexaflumuron and mix them evenly to prepare a cellulose killer powder, wherein the content of hexaflumuron is 0.5 wt%; (2) The cellulose killing powder of step (1) and the termite pheromone slow-release powder of Example 1 are compounded in a weight ratio of 1:10 to form a termite killing powder; (3) diluting the termite pheromone slow-release powder with 50-mesh cellulose powder by 10 times for later use; (4) placing a 50 g termite-killing bag containing the cellulose killing powder prepared in step (1) at the entrance of the building gap; (5) Adjust the pressure of the powder sprayer to 3 atm, and use high-pressure airflow to spray the termite pheromone slow-release powder diluted 10 times in step (3) through the gaps in the building into the termite activity area deep in the building. The spraying speed is 2 m / s, and the termite pheromone slow-release powder successfully reaches the ant nest at a depth of 4 m. (6) The pressure of the powder sprayer was adjusted to 1.5 atm, and the cellulose-killing powder prepared in step (1) was sprayed into the building through the gaps in the building using a low-pressure airflow. The spraying speed was 1 m / s, and the cellulose-killing powder successfully reached the ant nest at a depth of 2 m.

[0035] Two months after the treatment, the termite traps were found to be largely eaten, but a small number of new termite activity points still appeared at the infested areas, indicating that although the termites were killed, the ant nests deep in the building were not successfully killed. The reason may be that although the termite pheromones can attract termites to go out for food, the concentration formed in the gaps of the building does not change significantly. Figure 3 As shown, the number of termites going out to forage is small or they return halfway.

[0036] Comparative Example 4 A method for killing termites deep in a large building comprises the following steps: (1) Take an appropriate amount of 50-mesh cellulose powder and the termite killer hexaflumuron and mix them evenly to prepare a cellulose killer powder, wherein the content of hexaflumuron is 0.5 wt%; (2) The cellulose killing powder of step (1) and the termite pheromone slow-release powder of Example 1 are compounded in a weight ratio of 1:20 to form a termite killing powder; (3) placing a 50 g termite-killing bag containing the cellulose-killing powder prepared in step (1) at the entrance of the building gap; (4) The pressure of the powder sprayer was adjusted to 3 atm, and the termite killing powder prepared in step (2) was sprayed through the gaps in the building into the termite activity area deep in the building using high-pressure airflow. The spraying speed was 2 m / s, and the termite pheromone slow-release powder successfully reached the ant nest at a depth of 4 m. (5) The pressure of the powder sprayer was adjusted to 1.5 atm, and the cellulose-killing powder prepared in step (1) was sprayed into the building through the gaps in the building using a low-pressure airflow. The spraying speed was 1 m / s, and the cellulose-killing powder successfully reached the ant nest at a depth of 2 m.

[0037] During the inspection 2 months after the treatment, it was found that the termite traps were eaten in large quantities, but new termite activity spots were still appearing at the infested areas, indicating that although some termites were killed, the ant nests deep in the building were not successfully killed. The reason may be that although termite pheromones can attract termites to go out for food, the concentration formed in the gaps of the building does not change significantly, and the number of termites going out for food is small or they return halfway.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. A person skilled in the art should understand that the technical solutions described in the above embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the present invention.

Claims

1. A termite pheromone slow-release powder, characterized in that: The invention comprises termite pheromone, attractant and adsorption material, wherein the weight ratio of termite pheromone to attractant is (1-10): (1-5), and the mass volume ratio of termite pheromone to adsorption material is 1-10000 ng / mL.

2. The termite pheromone slow-release powder according to claim 1, characterized in that: The termite pheromone is (cis, cis, trans)-3,6,8-dodecatrienol-1 with an isomer purity of 85.0-99.9%, the attractant is hydroquinone, and the adsorption material is a porous material with a water content of ≤0.001%.

3. The termite pheromone slow-release powder according to claim 2, characterized in that: The porous material is 30-50 mesh activated carbon powder, fly ash, silica gel powder or cellulose powder.

4. A method for killing termites deep inside a large building by spraying powder, characterized in that: The following steps are involved: (1) Take an appropriate amount of 30-50 mesh cellulose powder and a termite killer and mix them evenly to prepare a cellulose killer powder, wherein the content of the termite killer is 0.5-2 wt%; (2) the cellulose killing powder of step (1) and the termite pheromone slow-release powder of any one of claims 1 to 3 are compounded in a weight ratio of 1: (10-20) to form a termite killing powder; (3) diluting the termite pheromone slow-release powder according to any one of claims 1 to 3 by 10 times with an adsorption material for later use; (4) placing a termite trapping bag at the entrance of a building gap, wherein the termite trapping bag contains the cellulose killing powder prepared in step (1); (5) spraying the diluted termite pheromone slow-release powder in step (3) or the compound termite trapping powder in step (2) through the gaps in the building into the termite activity area deep in the building by means of high-pressure airflow; (6) The termite-killing powder prepared in step (2) is sprayed into the building through the gaps of the building by means of low-pressure airflow, thereby forming a termite pheromone concentration gradient that gradually increases from the inside to the outside of the building gap, thereby attracting termites deep in the building to go out and feed on a sufficient amount of termite killer.

5. The method for killing termites deep inside a large building by spraying powder for enhanced synergy according to claim 4, characterized in that: The pressure of the high-pressure airflow in step (5) is 1 to 5 atm.

6. The method for killing termites deep in large buildings by spraying powder to enhance synergy as claimed in claim 5, characterized in that: The pressure of the low-pressure airflow in step (6) is 1 / 5 to 1 / 2 of the pressure of the high-pressure airflow.

7. The method for trapping and killing termites deep in a large building by spraying powder as claimed in any one of claims 4 to 6, characterized in that: The termite killer is hexaflumuron.

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