Ambi Pur 3Volution Air Freshener Plug-In Refill with Odourclear technology continuously cleans away tough lingering odours, leaving a light fresh scent for up to 90 days (if used at 12 hours a day at minimum setting). This blend of gourmand apple with hints of cinnamon and cloves will make your home smell like freshly baked pies hot out of the oven. Ambi Pur 3Volution air fresheners automatically alternate every 45 minutes between 3 complementary scents for a continuous fresh experience. Always read label.