They are the devices that should be preferred by those who want to do the fastest and most effective cleaning.
Dirt, rust, etc. accumulated over the years. It cleans up in minutes.
Ultrasonic cleaners convert electrical energy into sound energy and create cavitation in their chambers with sound energy and break up the dirt.
With ultrasonic cleaners, you can clean everything industrially produced in a very short time, except natural materials.
Depending on the dirt to be cleaned, a cleaning chemical is required. The promise of those who promise cleaning with only water is not valid for anything other than dust on objects.