using stainless steel media you need a rotary tumbler aka rock tumbler etc. and use water, two table spoons of Dawn, a tablespoon of Lemishine and add water. The media I bought from
http://www.stainlesstumblingmedia.com/ It was rather pricey at $50 a lb. but it lasts indefinitely vs. other media like corn cob. Now there were people who are more Chinese than me and they washed it and let the corn cob dry for a week or two. I did try it but it turned out like oatmeal and threw it away.
This wet method takes a bit more tumbling time vs. a vibe tumbler combined with corn cob or walnut. But again I live in an apt. now with no garage so the dust and noise was a concern. I just use my bathtub. The results are better than the more common method of vibe cleaning brass.
I am looking to rid my vibe tumbler with about 25+ pounds of corn cob and other media, along with a half bottle of Flitz media additive.
If you are looking for media the cheapest and best place is at that blasting place in Mapunapuna...I think it is called MR. Sandman. I bought about 30 pounds of corn cob for $30. Way cheaper than ordering or buying at a local gun store. In fact, I think they mentioned that they did sell some to a few unnamed gun stores

Clean brass doesn't make for accurate loads or a better shooter. But I like the bling! And the brass IS squeaky clean.

Totally frosty man!