I've tried the butter knife method and it didn't really work out that well for me. I also used the foam paint brush method and that seems to work better. But, the foam winds up falling off the wood handle fairly easily. So, I'm back to using the green brush. Nice sturdy bristles and I use a wheel cleaner that works very very well. I really hate those wheels though...
Johnny
2004 Imola Red over Black Leather. 6-MT, Navigation, Cold Weather Pkg (the wife loves them seat warmers!), 3.46 Diff, UUC Short-Shift Kit, Tranny Mounts, CDV Delete and iPod mount.