Air Wick Pure neutralizes odors and diffuses a continuously fresh and wonderful fragrance in your home with no added water. Each refill provides a continuous fragrance. The Fresh Matic diffuser has 3 settings to achieve desired fragrance level. Enjoy the continuous freshness in your bathroom, living room, office, or den. Get the confidence of knowing that your home is always welcoming and pleasurable for family and unexpected guests. Based on a low setting.