Purchased last year because my little cat had kidney stones and drank too little, I am delighted with the acquisition. The movement of water (a small bubbling over, runoff along the stainless steel water "stagnant" in the background) actually encourages the drink. The water remains fresh and filtered continuously. All is silent, if we care to maintain the high level of water. My fountain works day and night in the living room and do not mind at all, noise level. Dishwasher-safe. Stainless steel is ideal for hygiene, although it is obviously more expensive than a plastic fountain. If the flow rate begins to slow (it happened to me), do not panic: it's as limestone begins to deposit in the pump. Carefully taken apart, it plunges all in a bowl of vinegar, and you're off again!
