Keep your campsite, backyard, or tailgate mosquito-free with the Thermacell Rechargeable Mosquito Repeller Refills â 72 Hours (ER236). Designed exclusively for Thermacell rechargeable devices, these scent-free refills create a powerful 20-foot zone of protectionâso you can enjoy the outdoors without sprays, lotions, or open flames. Perfect for RV trips, camping adventures, fishing excursions, and backyard gatherings, these portable, TSA-compliant refills are easy to pack in your tent, backpack, garage, or tackle box. With heat-activated technology and long-lasting defense, youâll always be ready for wherever the roadâor trailâtakes you. For outdoor use only. Key Features• 20-Foot Zone Technology â Creates Thermacellâs largest zone of mosquito protection• 72 Total Hours of Coverage â Includes two 36-hour scent-free refills• Heat-Activated Protection â Works with lithium-ion powered Thermacell rechargeable devices; reaches max protection in about 15 minutes• No Sprays or DEET on Skin â Repels mosquitoes in the air, not on you• EPA Reviewed Formula â Independently tested for safety and effectiveness• Portable & TSA Compliant â Travel-ready for camping, RVing, and air travel• Satisfaction Guaranteed â Backed by Thermacellâs 100% satisfaction guarantee• INCLUDES: Two 36-hour refillsSpecsActive Ingredient: 5.5% MetofluthrinRefill / Cartridge Type: Rechargeable CartridgesLength: 0.75 inchesWidth: 2.5 inchesHeight: 2.5 inchesWeight: (2) refill cartridges 2 ouncesHours of Protection Included: Up to 72 hours Long-lasting 72-hour protection per pack Lightweight and travel-ready for RV life Safe, smoke-free protection for outdoor spaces | Rechargeable Mosquito Repeller Refills - 72 Hours