I've been using ONRWS for awhile now and I absolutely love the product, but I can't figure out how to clean the inner wheel. I find that a spray bottle mixed at QD lvs(6 oz to a gallon) works great as a pre-spray for most wheels on the outer surfaces, but can't effectively clean the inner wheel surface without using a hose/pressure washer. I'm taking care of 3 cars at an enclosed community that has SEVERE water restrictions. They won't let me use any water to wash the cars, even when I bring my own and collect the runoff, and it took 3 weeks to get them to let me use the ONRWS. So if anyone has any ideas how to clean the inner wheel with ONRWS, I'd really appreciate it a lot.