ultrasonic cleaner solution

You tell me when you find something that works. I've got one big enough to hold a holley dominator and have tried everything in it under the sun and that POS won't clean chit.
Make a 3" x 3" box out of aluminum foil and put it in your Ultrasonic Cleaner, run it for 1/2 hour with distilled water.

If your cleaner is working correctly the tin foil will look like you shot it with buckshot.

If the tin foil is untouched, unfold it and use to cover your grille rack and bar-b-que some hot dogs.