i wash my car 1 time a week clean / wash and spray the wheel 2 times a week.

i found a, fine hair brush... i.e car brush if you will call it that,
at Target and Walmart they work great for me i do not have to rub them
by hand just the Brush and soap. the 1 at Target has a hose connector for
$5.99, the 1 at Walmart was $2.84 no hose connector. both work great!