Always wondered bout those fabricy wheelwell liners...look kinda fragile to me but I`ve never actually dealt with `em. Wonder how QD-strength IUDJ and/or a Spray Wax would work once they`ve been cleaned....that works well on other textured surfaces. How do those materials wear over time? I can imagine them getting pretty ratty after a while.
As for access, on any remotely normal car/minivan/etc. (i.e., not a truck or SUV), I`d jack it up (yeah, at every wash) so you can get in there properly. It gets pretty quick and easy once you get your routine sorted out. Good time to check out brake/suspension components for any issues too.
FWIW, I do the vast majority of my wheelweel (and undercarraige) cleaning with BHBs, which might work OK on the fabric lining too. The WheelWoolies *are* good for broad areas with no nooks and crannies, though on painted/smooth plastic surfaces you have the usual potential marring issue to contend with (if ya care about it in there

Hey, this *is* Autopia).
I don`t get the use of aggressive cleaners...once you get things clean, the same sorta-potent shampoo mix I use on wheels and as Foamgun Concentrate works fine, even for winter-filthy wells. Especially once they`re LSPed. I used APCs (and yeah the P21s TAW is great stuff!) for *ages* before I realized it wasn`t necessary, so I`m not being critical...just learned that it was overkill that was murder on my LSP in there.
dcjredline- How do you Dry Brush that fabric without imparting far more abrasion that you would with lots of liquid? Not arguing at all, simply confused. When I do wells I use a *LOT* of water to flush away all the stuff that builds up in there and I *think* that`s how I`d approach the fabricy stuff too...not that I know from it. I`d be worried about any excess abrasion wearing it out even faster, but again, zero first-hand experience with the stuff.