After watching the below video, I keep my porta filters in the freezer. I find in doing this, any coffee that has built up on them, once frozen, simply cracks off them and there is no need to scrub them.....
Do you need to back flush a machine?
During busy days I'll find time to backflush with purocaf three times a shift (beginning, middle, end), and I do my best to brush and clear-backflush the heads as much as possible. My goal is to keep the shower screens 'raining' instead of pouring down the center.
That video was hilarious, by the way.
You really don't need to use the detergent until the end of the night. Just use a clear water back flush on the live bar, and brush the hell out of the group. You don't want to risk getting the dtergent in somones drink...yuck! I know you guys do an awesome job of rinsing but it still seems excessive.