theres alot of debate on how to clean attys and carts, i usually leave my atty in 91% rubbung alcohol for a couple hours, then run it under hot water for at least five mins then blow out excess water, dry over night, blow out again and im good to go, as far as carts i run em under hot water for a few then let em dry, hope this helps ya a lil bit, have a good day!-)