
Big con - it's NOT easy to get a gasket that will hold up when you use this. And that means water - and whatever's in the water - can splash back. In fact, I can say that 4 out of 5 attempts will splatter you. Once you master YOUR drain with one of the sealing accessories, you can reduce the risk of spills to 1 in 5. RELAX WITH THE PRESSURE. It's better to start small and do it twice than to go too high and immediately dump all the water back on yourself! It also cleans the lines well. It does work that a conventional piston cannot.