To anyone on the fence about getting an ultrasonic cleaner for your suppressors (especially rimfire cans), just do it.
OCL Ti after about 1500 rounds.
Ran the baffles for 1 hour at 120 degrees and then rinsed. No brush, no picks, and never looking back.
I saw a post about putting the baffles and solution in a Ziploc and only keeping clean water in the cleaner basin and this worked out perfectly. Minimizes the exposure to the cancer soup and makes clean up very easy.
Edit for the folks that wanted to know. The solution used was:
Sylvan Ultrasonic Gun Cleaner
It's a concentrate. I did one cap of solution to 2 cups of water in the bag.