Koil-D uses a simple spray and wipe foaming spray to clean and disinfect heating and air conditioning units at home or in the work place. This product is duel action in that it can also be used to control mold and mildew. The formula was designed to be virucidal against Herpes simplex 1&2, Canine parviru, and disinfects against Legionella pneumophila. To be used on non-porous surfaces. The disinfectant quality of this product is also effective against the Corona Virus.