I haven't personally used one, but I've heard that it works pretty well, but doesn't have a very large capacity. So if you are thinking about cleaning alot of brass you might keep that in mind.
I use a ultrasonic cleaner from Menards on my rifle brass. Works great. The Harbor Freight one is a little bigger than mine and has a timer. Will be upgrading to it soon.
From the Lyman website, notice that there are two different cleaning solutions: one for gun parts and one for brass casings. They are pretty clear about what metals each should be used on.
I've had one for almost 2 years and works well. It's worth the money especially when they're on sale or you have the discount coupon. Mine gets really, really, hot so I have to let it sit and cool to get the brass out. The only thing is that I wish it had came with the basket that the Lyman comes with, same cleaner btw, but didn't feel like ordering one for 20 some dollars shipped. I haven't seen any of these baskets elsewhere either. With the basket, the heat wouldn't be as big a deal.
I've got one and it works great. I only use it on gun parts and use my own cleaner of dishwashing liquid and window cleaner. I finish off with a tooth brush and then dry thoroughly and oil with the proper lubricant.
I bought one of the 19V screwdriver/flashlight combos for $19.95 on sale and I love that thing. It's not a commercial driver/drill but it's great for 400+ screws on a charge. I actually bought another one after I got the first one just for the extra battery and charger. Very good "bargain/Chinese" seldom use items.
I had one of the Harbor Frieght cleaners and it worked OK. I soon found a double transducer model on e-bay and upgraded to that and it works far better. With both of them I made up quick and dirty "baskets" using simple plastic food storage containters from the grocery store. I simply drilled a bunch of 3/16" holes in the bottoms for drainage. This way you can have multiple hoppers ready to go. When one is done, take it out and drop in the next. You can do separate calibers sorted easily this way. I also like using the citric acid for my brass. Get it on Amazon for cheap. It works great and has many other uses.
From the Lyman website, notice that there are two different cleaning solutions: one for gun parts and one for brass casings. They are pretty clear about what metals each should be used on.
There's apparently a company in China that makes these for a lot of folks. I've seen several brands that look identical. I paid about $60-$65 for mine at Harbor Freight.