Instruct: Classify Amazon reviews into positive or negative sentiment
Query: faulty product

Doesn't work. Even following manufacturer instructions to "prime" the pump, it simply won't draw product through the straw. Air just goes back and forth without creating a suction to dispense product. We tried again and again, washed and started over, and wasted a lot of time getting this thing to work, without success.Interestingly, we've had these pumps before and they lasted a few years with no problem. It was the replacement that doesn't work. Perhaps the manufacturing quality has deteriorated. Don't waste your money.