Have a good wiping door mat by your most used entrance, or just take off your shoes before walking on your carpets. We supply shoe cover booties to our customers after cleaning their carpets. You can buy these also at most hardware or related type stores. If you do get dirt on the carpet, use a good spot cleaner and follow directions they give you. Never rub the soiled area, always use clean paper towels and just blott the dirt up. Or call us for a deep clean and sanitation. :)