It is a device that produces mist. It contains pesticides to eliminate mosquitoes in your yard and around your house. They come in various types, shapes, and sizes. The most popular type of fogger is the Ultra-Low Volume (ULV) and the thermal foggers. This device is known to be very effective in ridding your house of annoying mosquitoes for approximately 12 hours. If you want to make sure that mosquitoes will surely be eliminated from your home, make sure to use the product every day for one week.