The ThermaCELL MR-GJ Mosquito Repellent Personal Pest Control Battery Operated Appliance is a convenient, lightweight and odor-free way to repel bugs and other pests. Without greasy, sticky or oily sprays and lotions, the mosquito repellent appliance offers a silent, no open flame option in establishing a protective barrier for pests. The ThermaCELL odor-free repellent mat contains the active ingredient, allethrin, which is a synthetic copy of the natural mosquito repellent found in chrysanthemum flowers. Weighing only 11.2-ounces, the personal appliance offers you a 15-foot by 15-foot zone of protection that is the equivalent of an average sized deck, patio or campsite. To use the MR-GJ appliance, insert the butane cartridge into the base of the appliance, then slide the repellent 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 biting pest protection will be created by the MR-GJ appliance. The ThermaCELL MR-GJ Mosquito Repellent Personal Pest Control Appliance comes in an olive green color and comes with (1) pocket sized reusable appliance, (1) butane cartridge, and (3) repellent mats. Each butane cartridge lasts for about (12) hours and each repellent mat lasts for up to (4) hours. All ThermaCELL products feature a (1) year warranty against manufacturer’s defects. ThermaCELL takes pride in creating products that are highly effective and make being outdoors more enjoyable. ThermaCELL and their parent company, Schawbel Corporation, are an industry leader in research, development, and engineering proven consumer products. 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.