1,Biodegradable 2,USDA authorized 3,Neutral, Non-toxic, odories 4,Contains corrosion inhibitors ... reached the standard of American aerospace and military. Authorzed by USDA. Long time immersion test show that Coil Safe has no ... foul, bacterium, oil and other mild dirt.Features:1,Biodegradable2,USDA authorized3,Neutral, Non-toxic, odories4,Contains corrosion inhibitors Directions1, Stop ...