[Zeke]

If they don't need cleaning, don't. But if you do, take them to a rug dealer. Don't be surprised if they take a hose and broom to them because that's how it's done. Then they are hoisted up on a rack to air dry. They might take some of the water out with a shop vac just so they can get the rug up on the rack. They use very mild cleaners only spotting where they have to and they rinse thoroughly as that's the main problem with cleaning rugs and carpets, soap residue.

I have a slanted driveway and I clean rugs all the time and hang them over the fence. After seeing it done, I have no qualms.