i bought some suede cleaner from famous footwear, its this foam and you just apply it wherever, let it soak in, then scrub away with a suede brush. shit works good, made my azures look almost brand new
I have a foam suede cleaner that gets absorbed into the suede and brings up dirt as it dries, which you can wipe off with a wet cloth. It's a no-name brand and it works pretty well, and I assume all the big name suede cleaners work the same. I have noticed that using a large amount causes some dye to get lifted off as well, though.