It is a unique cleaning solution designed to quickly and effectively remove foul odours, bacteria, mold, spores, fungi, road grime, nicotine oils and debris that accumulate in the car’s air conditioning evaporator. BG Frigi-Clean is injected directly into the evaporator case. It foams up to completely fill the evaporator core where it also blast away bug parts, pet hair, nicotine residue and other garbage. BG Frigi Clean is biodegradable, non-toxic, non-corrosive.