I can give you a cheaper and just as good a way if you have the mesh surrounds. I went to the local dollar store and bought copper pot scrubbers (yep $1 each) split them and layered it in. Cleans just like the original with a rinse in solvent and looks like it should.

http://www.flickr.com/photos/advance-design_parts_co/8129206782/in/set-72157631867396207