I bought an Industrial unit at the SHOT Show for handgun/small parts cleaning. I use a non-phosphorus (phosphoric acid removes blueing) engine degreaser with a sodium hydroxide base 1:16-1:8 mix. Seems to work well. I cleaned a Rem 11-48 trigger assembly to like new, a Kahr MK9 that had been riding in my pocket for 3 months, H&R revolver, the chamber and choke of the Rem 11-48. the cleaning solution looks like black mud now. I filtered it a couple of times to remove large particulate matter. The cleaner that came with the unit is $5 per 8oz bottle. Can't afford that stuff. I haven't tried it with cartridge cases yet.