08-01-2017, 09:09 PM
In all honesty, the dirtiest cap does just fine without any ultrasonics, just dish detergent and long bristled soft paint brush. Comes out clean.
Ultrasonic is for dirt that sticks.
Ultrasonic is for dirt that sticks.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.