Thermacell mosquito control devices are an effective and reliable solution for dealing with a mosquito problem in yards. Perimeter devices control mosquitoes in an outdoor yard area of any size and shape as needed. Two devices create a mosquito-free zone of roughly 40 m2 within 10– 15 minutes. Thermacell effectively controls mosquitoes, blackflies and no-see-ums. Thermacell is an easy, invisible and nearly scent-free way to control mosquitoes outside of buildings. No need for topical lotions or sprays: Thermacell protects everyone within the zone it creates. Easy to turn on and off. Thermacell Perimeter mosquito control devices can be staked into the ground or mounted to exterior structures. By changing the amount and location of the devices, you can control mosquitoes in an outdoor yard area of any size or shape as needed. Perimeter mosquito control devices are perfect for summer parties, evening gatherings and outdoor games. Several devices can be used simultaneously to cover a larger area. A mosquito control mat containing prallethrin is inserted into the Thermacell device. The gas heats up the mat, which then releases an active substance that forms a roughly 20 m2 zone of protection around the device. Use Thermacell safely. Read the label and product information carefully and familiarize yourself with the instructions for use. The grill of the Thermacell device heats up and a chemical is used in the device. Use and store the products out of reach of children and pets. Use at a distance from flowering plants. For outdoor use only. The empty Thermacell gas cartridge and mosquito control mat are disposed of as mixed waste/combustible waste in accordance with local guidelines. The mat is empty when the mat’s blue color fades. If the gas cartridges or mats have not been used completely, they should be disposed of as hazardous waste. The package includes two Thermacell Perimeter mosquito control devices, two poles and two surface mounts, including fasteners, as well as two gas cartridges and six mosquito control mats for roughly 12 hours of use. Color: black.