The intrusion of insects into a home or similar building is controlled by utilizing insect and/or microorganism controlling plastic materials in the construction of the building. The insect and/or microorganism controlling plastic building materials are manufactured by first blending one or more plastic resins with one or more insect and/or microorganism controlling chemical agents to form a blended plastic resin/insect and/or microorganism controlling chemical agent material. The blended plastic resin/insect and/or microorganism controlling chemical agent material is then utilized to manufacture plastic films, sheets, nonwoven fabrics, woven fabrics, insulating foams, flooring materials, wall covering materials, and the like utilizing conventional manufacturing techniques.