Instruct: Classify the given review into positive or negative sentiment.
Query: PUR goes Corporate sleaze

Imagine my disgust when I bought replacement filters and boldly on the package it says that fluoride is no longer filtered! That is the first thing I want out as so many municipalities add it unnecesarily to the water supply. It is in toothpaste for the kids(for direct application) and is a deadly poison for adults. The controversy is decades old.