The first bottle washer sent to me was defective, but AIH customer service promptly replaced it. This one works great with a couple of caveats. First, there is a threshold pressure above which you must operate otherwise the wire actuator (for lack of a better term) will violently oscillate after removing a bottle for at least a few seconds before settling down. Open the faucet a bit more to overcome this phenomena. Second, the same wire sometimes jumps out of the key way on the ferrule at the end of the spray tube, which jams the actuator open or closed. It rotates back in place pretty easily though. Finally, the device includes no directions, which is okay if caveats 1 and 2 did not come into play. But it definitely removes dried sludge from the bottom of a beer bottle once you get it tuned up.