Richway has been an innovator in the structural pest control industry since the first introduction of foam equipment used to apply termiticides in the early 1980s. Thanks to its high expansion ratio and ability to penetrate problem treatment areas, foam is an ideal complement to conventional liquid treatment methods, the company says. It helps create a more thorough chemical barrier. Pestifoam foam concentrate delivers consistent, high expansion foam to provide a more complete termiticide barrier that liquid injection methods alone can't, Richway Industries reports. Foam provides visible coverage and helps penetrate problem treatment areas such as voids, obstructions, soil variations and uneven surfaces.