One of those pan scrubber things works a treat on welded on flies and bird poo.
After a catastrophic failure of my prized small wheel woolie (I had to watch what autocorrect did with the little phrase!) I think a pan scrubber might be a good idea for cleaning my wheels in future too. It'd cause less scratches than my errant woolie.
Brillo pad or wire wool? Maybe I'd best ask in the detailing section...
D'oh ! Oh no - wheel woolie failure!
The pan scrubber will give you an even spread of scratches so will hide the woolie scratches and overall be much more aesthetically pleasing.
You don't need to stick your head in the dungeon of the detailing section, it comes to you, yes, we do home visits to other sections for a small charge. Leave the cash stuffed brown envelope that DTUK Andrew leaves on your doorstep, on my doorstep. Sharing is caring. You are wise not to call into the detailing section, stick your neck in too far and you will be sucked into the detailing vortex never to be seen in the more sociable (normal) areas of the forum ever again.
Brillo pad or Wire wool, whichever is the more aggressive, Brillo is injected with detergent so 2 in 1 multipurpose, what value for money!