A method for cleaning, sanitizing, disinfecting and / or sterilizing a filter and / or one or more needles of a food
injector device with a cleaning device, the method includes: supplying water and
electric current to the cleaning device; treating the filter and / or the one or more needles of the food
injector device with the
plasma activated water; the cleaning device includes either: i) an atmospheric-pressure
plasma device to produce the
plasma activated water or ii) a device coupled to the cleaning device for preparing the plasma activated water; and before the treating step, the method includes a pre-treatment step, where the filter and / or the one or more needles of the food
injector device are cleaned and / or rinsed with a fluid other than the plasma activated water.