The other issue is the dishwasher will do little more than you could do by hand - meaning it will not clean the case interior or the primer pocket effectively. Just a waste of time as far as cleaning goes, and a great way to poison yourself. Vibratory tumblers can be had for $50, and they do work. No excuse, really, not to use at least that as a proper tool. Cheap rock tumblers can be found online for $50 too, or less used, and they work fine for smaller batches of brass.