The nontoxic carpet cleaner removes dirt & stains from carpet, rugs & upholstery. It will not damage carpet fibers, degrade carpet backings or leave residue behind. It is certified by the Carpet & Rug Institute as being safe for use on carpets in pre-spray & extraction cleaning. The concentrated formula dilutes at 1:21 for great value. It meets the Green Seal GS-37 Standard, including reduced health, safety & environmental impact of formulations as well as product efficacy requirements. It also complies with LEED green building requirements & environmentally preferable product purchasing programs in place throughout federal, state & municipal governments.