CHASE DEM BUGS AWAY. Repel Realm Zone Mosquito Repellent Refill provides outdoor protection for up to 40 hours with each pack containing 5 sets of refill cartridges. This EPA-registered product from the trusted brand Repel is designed to deter and repel mosquitoes effectively, making it ideal for camping, hiking, and other outdoor activities. The gray-colored repellent is lightweight at 0.19 oz per pack, ensuring easy portability for use in any outdoor setting.