I picked up a bag of No Name "Green" Kitty litter from the local grocery store. Its ground walnut. I use an RCBS Mega Tumbler (ok bigger than I thought and/or really needed but it works great, just don't need to use it very ofter as it does such a big load). After two loads (yes, first time using it), the media is looking pretty dark and may not be working as well as it should, so I decided to empty it out and get rid of it. Now my question is, how do I get rid of it? I was thinking I could throw it out in the compost, but it has brasso on it. Could I use it as it was initially intended as a litter for the cats??