A while back,
I had asked folks here for some advice about unclogging my dishwasher drain hose. Your advice was very helpful, thanks.
Frankly, the TSP did not clear the clog by itself. I followed your other suggestions, disconnected the drain hose from the disposal as you explained how to do, and reamed it out with a mini-snake. Then a wash cycle with TSP managed to flush out the rest of the gunk.
It was a real chamber of horrors in there. Smelly and moldy. I had to wear a mask.
And since then, I've found other great uses for TSP. It's really a great cleaning aid.