Air Wick Freshmatic Max Refill Silk and Lily Freshness - A seductive floral scent inspired by gentle lily freshness, a hint of silk, and sensual vanilla. The Air Wick Freshmatic device is an automatic fragrance spray that independently and continuously releases high-quality scents. It's easy to use - simply insert the Air Wick refill into your Freshmatic device, and the battery-operated unit will emit fresh, light fragrances at the intervals you set. Choose from 3 different intervals of 9, 18, and 36 minutes. This way, Air Wick Freshmatic Max neutralizes unpleasant odors and provides you with a pleasant fragrance experience for up to 70 days.