Indoor Residual Spray, IRS involves coating the walls and other surfaces of a house with a residual insecticide. For several months, the insecticide will kill insects that come in contact with these surfaces.
IRS can be place strategically on areas that the target pest will come in contact with, this will make sure that the key areas are always protected and prevented.
Bed bugs that comes into contact with the residual spray will be knock out within minutes and are effectively eliminated, which reduces the numbers of bed bug that are left to reproduce.
IRS serve as a good compliment treatment along side with Steam Treatment for bed bug, as it can protect furniture and surfaces for a period of time.