˜Turquoise Oasisâ€TM is a special fragrance that fills your house with pleasant and fragrant aromas of driftwood bleached by the sun, salty sea spray, and warm air. When the Airwick Freshmatic is set to "low," a single refill can last for up to 70 days. Use only Airwick Freshmatic Refills with the Airwick Freshmatic Device for optimal results. With the help of the Airwick Freshmatic gadget, your house will constantly smell lovely as it continuously delivers bursts of fresh aroma. To control the frequency of sprays, the gadget has three intensity settings: High, Medium, and Low.