RECOMMENDATIONS FOR APPLICATION. Remove the air filter. Start the engine. Turn off the air conditioner. Set the heater fan speed to the minimum power. Shake the can thoroughly. Spray the agent at intervals of 3 seconds onto the evaporator of the air conditioner (2/3 of the bottle) and into the air ducts (1/3 of the bottle), or spray the entire can into the drain hole to drain the condensate. Wait 15-20 minutes for the foam to settle and dirt to drain. Turn on the heater at the maximum temperature and blowing speed. Ventilate the interior thoroughly. Install a new air filter.