Ambi Pur 3volution plug-in refill with Odourclear technology cleans away tough lingering odours. Leaves a light fresh scent for up to 90 days (if used 12 hours a day at minimum setting). Ambi Pur 3Volution plug in air freshener refill (20ml). Vanilla fragrance creates a warm, welcoming ambiance in your home. Doesn't mask but truly cleans away tough lingering odours, leaving a light fresh scent. 3 scents alternate every 45 minutes so you always notice them. Adjustable scent intensity. Wide range of high quality fragrances.