Bed Bug Contact Killer kills bed bugs on contact. The Bed Bug Contact Killer is an oil-based pyrethrin product, not water-based – thus giving added efficacy with no residual. The spray is specifically geared for use on the re-emerging pest problem of bedbugs ( Cimex lectularius ) in commercial and residential accounts. It can be used for a variety of bedbug harborage areas, including mattresses, wall-ceiling joints, baseboards, behind and underneath furniture, cushions and furnishings, etc.  The Bed Bug Contact Killer is available in a one-gallon spray bottle.