Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Once great, PUR has completely gone beyond bad.

I used PUR faucet-mount filters for at least ten years in the wilderness with surface spring (dirty) water without mishap. When the filter was dangerous, it stopped running. We got about 300 gallons per filter. The device worked for many, many years without replacement. But in the last year or so, PUR is a complete disappointment, even just on city water. We've spent a fortune on filters that run out far short of 100 gallons, apparatuses that fall apart or break. The latest joke is the one-click easy attaching filter. It leaked into the clean water, it blew off repeatedly, and finally completely blew apart, breaking a plate in the sink. These are complete rip-offs. Now I'm going to invest in a counter top Aquasana brand filter which makes really "pure" water for about 10 cents a gallon. I will never buy another PUR product.