The Thermacell Mosquito Repellent Refill (MR000-12) is a reliable outdoor solution for keeping mosquitoes at bay. With a duration of 12 hours, this refill is perfect for extended outdoor activities such as camping, hiking, and other outdoor adventures. The product is EPA registered and specifically designed for repelling mosquitoes, making it a practical choice for staying safe and comfortable in nature. Its easy-to-use design ensures convenience and effectiveness in keeping insects at a distance.