Charlie's Soap - Booster & Hard Water Treatment - 2.64 lbs. (1.2 kg)Want to beat hard water, keep your clothes clean and protect the environment? Charlie's Soap Booster & Hard Water Treatment uses a biodegradable phosphate that leaves no residue on your clothes while softening your wash water. Certain phosphates can safely eliminate these problems and be environmentally friendly. They're only a problem with overuse. If hard water is an issue, why not use an environmentally-safe product (theirs) rather than take a chance with other detergents that put bad things into the environment? The advantage of using Charlie's Soap with our new Booster & Hard Water Treatment is that you get the benefit of really clean clothes without a lot of chemicals left behind. It's boost for their Powder or Liquid to give you the best of both worlds. What's in Charlie's Soap Their formulas are what make them special. They have been fully tested for non-toxicity (Duke University) and biodegradability (Japan Food Research Labs) and effectiveness (SGS US Testing Labs). They are unique and, following the practices of Coca-Cola, secret. A secret formula doesn't keep folks from drinking Coke, right? But consumers have a right to know what's inside the products so that folks can better make up their minds whether they want to use their products. Charlie's Soap's ingredients can be separated into two categories: biodegradable ingredients and natural mineral ingredients. The United States federal government requires that a product biodegrade 80% in 28 days before it can be labeled biodegradable. As tested by the Japan Food Research Laboratories, their biodegradable ingredients degrade by 97.3% in 28 days in soil. The rest of their ingredients fall under the natural mineral category. Their products are rated safe for use around lakes and streams and have been approved by the USDA for use around food preparing surfaces. They are non-toxic.