Regain your cars just driven off the forecourt fragrance with the simoniz air con refresh aerosol its easy to use and guarantees fast elimination of odours in your car start your cars engine and set the air conditioning air re circulation system to full power place the canister in the foot well behind the drivers seat push the aerosols automatic actuator and leave the vehicle shutting all doors and windows behind you leave the canister to empty for around 10 minutes with the cars