cleaners

For you guys who have an Ultrasonic cleaner, what kind of solutions (or none) do you use for parts? IE carbs, brass parts, gears bolts etc? I just bought one and would love to get some advise on the right mixes that are practical in a home garage without me doing a bunch of useless...

Alright I have been doing carbs with carb dip for many years but I am fixing to bight the bullet & buy me a small ultrasonic cleaner with in the next day or so. I just wanted a little advice from people that have them. I had my eye on these 2 I just want to be able to do a couple carbs at a time...