Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not sure if I got defective ones, or if it's my brewer, but these always overflow.

These filters always overflow without fail. I have a BUNN Velocity NHBB brewer and the filters that came with it were just fine. Had problems with the generics, so I decided to buy the Bunn brand name filters. These too overflow, however, so I'm not happy.