The ThermaCELL Mosquito Repellent Personal Pest Control Appliance Camo 2-Pack is a convenient, lightweight and odor-free way to repel bugs and other pests. Without greasy, sticky or oily sprays and lotions, the appliance offers a silent option in a protective barrier for pests. The ThermaCELL odor-free repellent mat contains the active ingredient, allethrin, a synthetic copy of the natural repellent found in chrysanthemum flowers. Weighing only 11.2-ounces, the appliance offers 15-foot by 15-foot protection or an average sized deck, patio or campsite. To use the appliance, insert the butane into the base of the appliance, then slide the mat into the appliance. Turn the dial clockwise into the ON position and click the START button to turn on the device. The heating element will warm the mat and begin vaporizing the repellent into the air. Within 15 to 30 minutes, the 225 square foot of protection is created by the MR-PTJ appliance. The ThermaCELL Personal Pest Control Appliance 2-Pack comes in the RealTree Xtra Pink and Green camouflage print. Each has (1) pocket sized reusable appliance, (1) butane cartridge, and (3) repellent mats. Each appliance lasts for about (12) hours. ThermaCELL takes pride in creating products that are highly effective and make being outdoors more enjoyable. ThermaCELL products that have been field tested by the Department of Defense and are endorsed by the North American Hunting Club, Good Housekeeping Institute and Parade Magazine.