You can pick up bags of 00 wire wool dead cheap in most places (B&Q, Screwfix, Toolstation, etc). I have used it in conjunction with Autosol and also with the Britemax Metal Twins. The inside of the tailpipes on mine is pretty baked on and I am thinking I may have to take varying degrees of flap wheel to it to clean them up before going at them again with the Britemax.