Over the years I've bought a lot of product from Bioforce-Envirotech, In Minneapolis. Their website
is www.bioforceinc.com. In their "EnviroPro" line I like their "Outsolv", "Carpet & Upholstery Cleaner", and the only protector I use is their "Carpet Protector". You can often get Glen Nelson, company president, on the phone. He's great to talk with.