Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not good for Pet Fountains....

Bought this product when I bought our Drinkwell 360 fountain for our cats. Had intended to use it in the reusable filter we also bought, to save money on the filter replacements. It came in a HUGE container, like a life-time supply! LOL! That would have been fine, except that it doesn't work at all well for our application. It is so full of fine dust, even after repeated rinsings, that it clogs the screen at both ends of the filter almost immediately. It almost burned out our fountain motor. Back to the refills for us. I'm sure this is adequate charcoal for other applications, just don't use it in anything with fine screening.