Eagerly tried out my new sludge sucker yesterday in a shallow but large muddy puddle on top of a large paver area. Due to the shallowness, the sucking was slow, but it worked well. I was almost done when a pinhole leak developed in the 1 1/2 inch drain line, a couple of inches above the sucker.
Apparently i had the drain line bent at too sharp of an angle too close to the meg nozzle in the sucker, and the nozzle eventually blasted its way through the plastic pipe. So, my advice is to keep the first foot or so as perpendicular to the ground as you can when using it.
The fix is easy, ill just cut the pipe. Which, by the way, is a little unwieldy and definitely takes up some precious space when stored. All in all, a good tool when you are looking to clean up a puddle in a hurry.