Box Contains: 1 butane cartridge (Net contents 0.73 fl oz); 3 insect repellent mats (net wt. 0.073 oz each). Each mat lasts a maximum of 4 hours. Provides 15 x 15 ft. of repellency. The size of an average deck or outdoor campsite. Warranty and Disclaimers - Seller will not be help responsible for damage, injury or poor performance caused by use of other butane cartridges or repellent mats. Seller is not responsible for damage caused by using this butane cartridge in other butane products. May be used in any Thermacell Mosquito Repellent product. Toll Free: 1-8-No Skeeters. Mats made in Italy. Manufactured in Philippines.