Low-Warfarin Bait Composition With Selective Hog Access
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Solution Overview
Problem
Existing feral hog control methods using warfarin baits are inefficient, costly, and pose risks to non-target animals and the environment due to high warfarin concentrations, leading to population reduction and time delays in hog mortality.
Innovation Solution
A feral hog control system utilizing a bait with a low dose of warfarin (not greater than 0.01% by weight) combined with a carrier material, and a selective access device to prevent non-target animals from accessing the bait, ensuring targeted and efficient hog population control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high concentration of warfarin is used in bait, then mortality rate of feral hogs is improved, but risk to non-target animals and environmental harm increases
Solution Approach 1:
The patent applies local quality by creating different bait formulations with different warfarin concentrations tailored to specific target species. Feral hog bait contains low warfarin (0.003-0.01%) while wild dog bait contains high warfarin (0.03-0.1%), allowing selective toxicity based on the intended target rather than using uniform high concentration for all purposes.
Solution Approach 2:
The patent changes the concentration parameter of warfarin based on the target species. By adjusting the warfarin concentration parameter from high (0.03-0.1% for wild dogs) to low (0.003-0.01% for feral hogs), the system achieves species-specific control, maintaining effectiveness for the target while reducing harm to non-target animals.
2Reliability
If high concentration of warfarin is used in bait, then mortality rate of feral hogs is improved, but environmental impact increases
Solution Approach 1:
The patent changes the concentration parameter of warfarin from high to low for feral hog control, thereby reducing environmental contamination while maintaining control effectiveness. The low concentration (0.003-0.01%) is sufficient for feral hogs due to their feeding behavior and physiology, eliminating the need for high concentrations that would harm the environment.
Solution Approach 2:
The patent converts the previously harmful high concentration approach into a beneficial low concentration approach. By recognizing that feral hogs can be controlled with much lower warfarin levels, the system transforms environmental harm into environmental protection while maintaining control efficacy.
3Adaptability or versatility
If selective access device is added to feeder, then selectivity for target species is improved, but device complexity increases
Solution Approach 1:
The patent applies dynamics by using a movable cover that can be opened or closed based on the user's intent. The cover is not fixed but can be dynamically positioned to either restrict access (when selectivity is needed) or allow access (when refilling or monitoring is required), providing operational flexibility without permanent structural complexity.
Solution Approach 2:
The patent segments the feeder into two functional parts: the main body containing the bait and the removable cover providing selective access control. This segmentation allows the cover to be independently designed and positioned, simplifying the overall structure while achieving selectivity through the separation of access control from bait storage.
Data Source
AI summary
Disclosed herein are embodiments of a feral hog control system including bait comprising a carrier material and an amount of warfarin, wherein the amount of warfarin is not greater than about 0.01% by weight of the bait. Further disclosed herein are embodiments of a selective access device for permitting selective access to the bait when the bait is disposed within a feeder.