ProFoam Foaming Concentrate Quart 60% Sulfates Disodium Lauroampho Diacetat wall voids, tunnels, ground voids, drains and other voids needing complete treatment of all vertical and horizontal surfaces; Food-handling establishments ADD FOAMING AGENT TO MIXTURE LAST To Achieve Low Expansion - 1/2 to 1 1/2 oz. Pro-Foam per gal. of pesticide To Achieve High Expansion - 1/2 to 6 oz. Pro-Foam per gal. of pesticide Expansion rates will vary depending on water pH and temperature.