Viper Evap + is the industry’s only non-rinsing evaporator coil cleaner using enzymes in a high performing detergent base. Imbedded soils that resist conventional detergents are removed successfully with Viper Evap +. The solution remains active for 72 hours with condensate production for continuous cleaning and complete odor elimination. Spray on and fully saturate the coil. Place the unit back into operation. The performance is impressive.