Rotary Spray Balls

Just wondered if anyone has any thoughts on the use of rotary sprayballs for cleaning vessels etc.
I always believed that the FDA approach was that if using these sprayballs then you had to ensure that they were rotating all the time which meant you either had to watch continuously or have a rotation failure detector fitted. Thus static sprayballs were prefered. However rotary sprayballs are very effective. Does anyone have any feeling or regulatory feedback on the use of rotary sprayballs?

Many thanks