I do I do. For the smaller cheap sub hundred dollar ones that is.
Watcha want to clean? ......
I got mine mainly to clean the carbon off of my diesel trucks injectors tips but use it alot on stuff like lawnmower carbs. Works great with the right cleaning solution - many small units are used with cleaners for gun parts, jewelery and dentures.
I got this one from Amazon...

Takes a couple of hours usually to clean small parts.