I clean on it a little everyday. When it gets nasty, I scrub the floor with Comet and powerwash it out. Usually about every two weeks.

A word to the wise to all of ya'll with carpet. Spraying it down at the car wash or with a pressure washer will destroy the carpet backing over time making small tears in the rubber. Then dirt and grunge gets underneath and act as sandpaper destroying the bonding agents.The best way to wash carpet is with a low pressure hose and a little laundry detergent. Brush it lightly in and then spray it back down. If you want it to really look like new, put some Downy liquid fabric softener in a spray bottle and put a light mist on the wet carpet. Let it sit an hour then wet vac it against the grain. It will fluff the fibers and make it stand up like new a lot of times