Ive used UM for years and years, first in portables and for the last 11 years in my TM. Ive never used de-foamer and everything is always clean as a whistle, no jet or chemical pump blockages at all, a brilliant product that works!
Last year I ordered another extraction product from another supplier, which i have also been very happy with, I thought I'd try it again, after not bothering with it for a few years. I didn't bother to ask the price. Wow, I was gobsmacked when the invoice arrived, more than twice the price of UM.
Dave.