This safe, non-toxic, biodegradable formula contains billions of bacteria that destroy malodors by eliminating their source and digesting waste naturally, feeding on fat, oils, and greases as well as solids. As a drain treatment, just pour down the drain. Do not flush after. In grease traps, it reduces BOD while digesting organic waste. Great for eliminating build-up and odors in grease traps, floor drains, around toilets and urinals, holding tanks, septic tanks, RV/camper toilets and more.