I have used this unit with a 6.5 HP Wet & Dry Vac. After a few moments of "mastering," I moved down a set of gutters (a one-story ranch) and vacuumed out bits of wood. Lots of wood debris. It was only clogged once, and it was the vacuum hose that was clogged, not the manhole cleaner tube. I expected the bent part of the pipe to clog, but it stayed open the entire time. I am 65 years old and found this setup easy to use and was grateful to have found something I could control from the ground. I might even leave it hanging in the ditch while I empty the wet vacuum. Few more sticks didn't work to throw a whistle, which is fine. However, they were pulled to the pipe and lightly knocked to the ground. This installation was designed for one floor only.
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