ActiveGuard mattress liners are a mattress and box spring product that kills bed bugs and dust mites. Fashioned and installed simply and as quickly as a fitted sheet, ActiveGuard provides long-lasting protection against bed bugs for up to two years, the manufacturer reports. ActiveGuard is a proactive tool for preventing a potential bed bug infestation before it becomes established. According to manufacturer Allergy Technologies, the liners typically kill even resistant strains of bed bugs within 72 hours. ActiveGuard mattress liners are thin and breathable, and continue to work 24/7 even if ripped or torn; an important consideration when intending to be installed on a box spring, the firm says. Pest management professionals can check out ActiveGuard mattress liners at the company's PestWorld booth (#625).