The Patio Shield offers simple, effective and portable mosquito protection, providing hours of scent-free, mess-free defense. Perfect for outdoor activities like entertaining, gardening and poolside relaxation, it requires no batteries or cords, making it incredibly convenient. The Patio Shield creates a 15 feet zone of protection, keeping mosquitoes away so you can enjoy your time outdoors. Powered by a safe, compact 12 hr fuel cartridge, it ensures long-lasting, reliable mosquito defense wherever you go.