For the backyard and beyond, the Thermacell E-series is easy to use and provides hours of scent-free, mess-free mosquito defense. Our largest area repellent zone available, the E55 provides a 20-foot zone of advanced mosquito protection. Features a 5.5-hour battery – can charge while operating to extend run time. 12 hours of mosquito repellent included. Audio cues and LEDs let you know you’re protected and how much battery life remains. Keep mosquitoes away with the simple push of a button. We started Thermacell because we wanted a better way to fight mosquitoes than sprays and candles. From humble beginnings, our team of entomologists, researchers, and outdoor enthusiasts has over 100 years of combined experience fighting mosquitoes. The E-series is our most advanced mosquito repellent device ever, reflecting the combined expertise of our world leading research team. Our mission at Thermacell is to change the way the world fights mosquitoes, and we've been doing it for over 20 years. Headquartered outside Boston with distribution centers in Georgia, we're leading the way with better solutions to biting insects. With global distribution in 30+ countries and tens of millions of repellers sold, more and more people around the world count on Thermacell to make outdoor time even better. Keywords: bug zapper mosquito zapper mosquito repellent for patio outdoor thermacell mosquito repeller citronella candles outdoor mosquito killer misquito repeller for outdoor mosquito lamp thermocell repell outdoor mosquito control fly trap indoor insect