Ultrasonic cleaning is generally a safe cleaning process. It is a gentle cleaning process that does not do any harm to any kind of items. Big and sturdy as well as delicate and tiny items can be cleaned through it.
But even though the cleaning process itself is not damaging to items, the cleaning solution, if it is the wrong kind, can damage the items. For this reason, it is a must to use only the ultrasonic cleaning solution that is compatible with the items to be cleaned.