One of the most important thing you can do for your carpet is to get it professionally cleaned. Carpet absorbs dirt and germs which will settle at the base of the carpet. Vacuums only get the surface but with our machines we get to the base. With that thought, how often should this process be repeated? Well it depends on traffic, pets, children, allergies and smokers. It is recommend every 6 months with low traffic, but if you have pets or children, every 4 months. For hotels, it is recommend once every 2-3 months.