Would you clean yer catalytic converter if there was a low cost and easy process available? Kinda like cleaning the MAF sensor versus replacing it because it was dirty.
Had a little time so I built my own catalytic converter washer. I've named it the CatWasher. It's still a work in progress and I should be able to test and document it's cleaning efficiency tomorrow on my own 370,000 mile catalytic converter.
It has enough pressure to shoot a continuous liquid stream over 10' in the air.