I have been using this vacuum to dampen carpets for over 12 years. It's amazing to see how much dust there is on the carpet after a regular vacuum cleaner. The only problem is that even if you empty and rinse the water tank and detergent tank after use, it will damage the rubber seals on the bottom valves of the tank and start leaking both ways. In my case, hot water seeps into the detergent tank. Replacing both valves solved the problem.