Protect-a-bed Bed Bug Box Spring Encasements are the pest control and hotel industry's choice for protecting box springs against bed bugs, allergens, dust mites, dirt and liquids. These high-quality protectors are trusted by hotels world-wide and have been certified by an entomology laboratory to be 100% bed bug proof. Any bed bugs you seal up in the bed bug boxspring encasement cannot escape or bite through the encasement, and will eventually die. This means you can save your boxspring without throwing it out!