Always make sure you rinse with clean water to get all the soap out! Soap left in will attract dirt and make the carpet look matted down in no time. A
carpet cleaner told me that unless you rinse the soap out you are wasting your time. I use our home carpet shampooer with the upholstry attactments. it has a switch to turn off the soap so you can rinse a few times. Before I used my wet vac, 2 spray bottles, one for soap the other with water only, and several brushes.