Dema foamers combine detergent concentrate with air and water to produce a thick rich foam instantly, automatically and inexpensively. Fully adjustable for precise detergent-water proportioning as well as foam dryness. Foam works on both vertical and horizontal surfaces. Excellent for trucks, cars, trailers, airplanes, or as aluminum brighteners, smoke house cleaners and more. No pumps, pressure tanks, electrical wiring or premixing is needed.