Simply remove the top of the Nitrous Oxide Bottle and replace the old refill with the new one! Scents last up to 21 days (on low settings, under ambient conditions).
Exhaust Muffler Air Freshener Refill by Turborgasm™
Simply remove the sides of the Exhaust Muffler and replace the old refill with the new one! Scents last up to 21 days (on low settings, under ambient conditions).