Evap Foam “no rinse” is a powerful, heavy-duty aerosol detergent formulated with specialized surfactants and alkaline cleaners to clean cooling and evaporator coils without rinsing. The foaming product liquefies dirt, grease, and other residues efficiently, and it can be sprayed in any direction. Fortified with corrosion inhibitors, it is safe for metals and other surfaces, and the foam naturally rinses itself off, removing emulsified dirt. NSF-registered, Evap Foam leaves a pleasant lemon scent, deodorizing the area as it cleans.