K&N part 99-6010 is a 32 ounce pump spray bottle of HVAC Filter Cleaner. K&N HVAC Filter Cleaner is the only cleaner recommended to clean K&N HVAC Filters. K&N 99-6010 eliminates and cleanses particles from the surface of the K&N HVAC Filter so it can be washed clean with water. After letting your K&N HVAC Filter dry it is recommended to apply a small amount of the cleaner to help neutralizes odor causing sources instead of masking these odors.