Non-fuming, does not produce offensive odors or gases normally associated with other drain openers. Ideal for institutional, home, hospital, factory and office building use where strong odors are objectionable. Non-acid, powerful action crystalline flakes provide high surface area to the clog. Large flakes quickly dissolve grease, hair, soap, food and other organic material. Works faster than liquid caustic or bleached-based openers and is more economical to use. Thrift can be used for both emergency and preventative maintenance treatments of clogged or slow moving drains and waste lines. Safe for septic systems when used as directed. Contains no phosphates or aluminum. Hot water formula will not solidify in drains. Will not stain and is harmless to most metal and plastic pipes, valves and fittings and will not damage chrome, brass or fine plumbing fixtures. Avoid contact with aluminum pipe or utensils.