Creates a 15-foot zone of mosquito protection around you Works fast, max protection in 15 minutes Ideal for backyard, poolside, camping, fishing, and beyond Consistent repellent protection, doesn't weaken over time Easy to use, people and pet friendly Proprietary formula precisely targets mosquito sensors, driving them away Pack includes 1 repeller and 12 hours of repellent refill 100% SATISFACTION GUARANTEE: At Thermacell, we stand behind the performance and quality of our products. If you are not happy with your purchase, you may return it to us for repair, replacement or refund. Please contact Thermacell Customer Support Team. (See packaging for contact details.)