Effective Insect Repellent: Advanced cartridges Compatible with Thermacell refills, Keeps mosquitoes and other flying insects away from your home Long-Lasting Protection: Enjoy up to 40 hours of continuous defense with each refill, ensuring reliable and consistent protection against mosquitoes User-Friendly Design: Simply replace the cartridges for an easy, mess-free experience. Enjoy hassle-free, ongoing mosquito protection with minimal effort Value Pack: Each box contains 4 cartridges, providing plenty of refills to keep your outdoor spaces protected and mosquito-free Customer Support: We are committed to your satisfaction! Contact us anytime if you have any questions or need assistance with your purchase

4Pack Advanced cartridges Compatible refills.