RADIUS REFILL 40H Used with Thermacell’s Radius Repellent, this refill offers up to 40 hours of mosquito protection for you and your surroundings. The easy-to-use Radius repellent offers a better alternative to topical anti-mosquito products. Indeed, Radius treats the area around you, rather than your skin. This means there are no messy sprays or oily lotions. The odorless Radius repellent is rechargeable, compact and powerful. Radius uses heat to release a proven repellent, creating a protective zone against mosquitoes for you and those around you. Powered by a Lithium-Ion battery (rather than fuel), Radius is suitable for air travel and operates consistently at any altitude. For best results, use it on days with little or no wind (mosquitoes are at their strongest on those days), and allow 5 minutes to form a full protection zone around the device. With Thermacell, turn it on... mosquitoes disappear! Use only with Thermacell Radius Zone mosquito repellent 4.5 meters of protection against mosquitoes No dirty sprays or lotions No open flame, No smoking candles Fragrance free and DEET free Fully sealed and spill resistant Travel-friendly design