If you haven’t used one before I’d temper your expectations on the results of using your ultrasonic cleaner. I’ve had mixed results with mine, what I’ve found is very heavily contaminated parts don’t clean up that well and I’d clean as much off by hand before you put anything into the cleaner. I’ve used the carb cleaner in mine and I’d say it was ok, again things don’t come out gleaming looking brand new but they do serve a purpose. Something I’ve tried which has given good results is, if it’s only small parts you are cleaning, get a glass jam jar and fill it with evaporust or petrol put your parts in it then put that into the cleaner and run it. Watch as the jar and contents will displace a fair bit of whatever solution you have in your cleaner. The neat fluid really gets into the dirt and contains the contamination in the jar. HTH.