I've been using this stuff for about 6 months applying it after every other wash, so I use it 2x/month. Lately it's been raining or I've been short on time so skipped the Armor All for the last few washes.
Yesterday I had to spend some quality time with a brush and some sonax followed by a mitt with soapy water to get them clean. It was A LOT more work than the couple minutes it used to take me.
Yes, it has to be reapplied but spraying the stuff on the wheel is a lot easier than using a wax and the waxed wheels I've seen still require some work to clean.