Mosquitoes can disrupt outdoor activities like dining, parties, camping, or relaxing on your patio. Thermacell's award-winning technology keeps mosquitoes away by creating a 20FT protection zone around you. Our proprietary formula precisely targets mosquito sensors, driving them away. With consistent protection that doesn't weaken over time, Thermacell helps you live your best outside life without the use of bug sprays or lotions on your skin. Only Genuine Thermacell refills are scientifically proven to work with Thermacell repellers to protect a 20FT zone. Rechargeable refills are compatible with all E-ZoneGuard repellers. 240 hours of mosquito repellent included. Keywords: Repellent; Refill; Rechargeable; Mosquito