Was hoping it would eliminate the cleaning of the primer pockets. I reload a lot of berdan primed Swiss brass and it is a royal pain to clean out the primer pockets with a dental pick. I found that a 50/50 mix of vinegar and water with a drop or two of dishwashing liquid will clean out the primer pockets but I'm a little concerned about what effect the vinegar will have on the brass. As for now I've given up on it and went back to the tumbler. Thanks for all the suggestions.Why bother? You've already got the solution to the problem...your tumbler. And it sounds like it works OK. Ultrasonic cleaners are best suited for things like jewelry. Regarding Harbor Freight, caveat emptor.