Clean the interior thoroughly, close windows, switch on the ignition and open the ventilation system. Set the air conditioning to recirculation mode (cold) and the fan to level 2. Place the 100 ml aerosol can of Caramba Active Perfect Climate in the footwell on the passenger side in the intake area of the ventilation system and press the spray head down until it locks. Leave the vehicle immediately and close the doors. After 10 minutes, open the doors and windows (and tailgate if fitted) and ensure that there is complete ventilation. Do not put the vehicle back into operation until it has been well ventilated. Note: Use only 1 can per vehicle for treatment!