Odor neutralizer and cleaner for small a/c systems comstar’s dirty sox eliminates unwanted odors from a/c and heat pump systems for extended periods. This product cleans and neutralizes objectionable airborne odors coming from small air conditioning, refrigeration systems, humidifiers and heat pumps. This non-corrosive and biodegradable product is safe on all metal surfaces. Dirty sox cleans away dirt, grime, oily build-up and eliminates unwanted odors. Dirty sox is for jobs where environmentally safe deodorizers and cleaners are demanded. It leaves a long-lasting, active odor neutralizer that is unmatched in the market today. Used in hvacr systems of all types. advantages: dirty sox has a powerful spray to get liquid back to coils dirty sox is biodegradable dirty sox cleans dirt, grime and oily build-up dirty sox is safe on all metal surfaces buy yours today!!