Instruct: Classify the given Amazon review as either positive or negative.
Query: filter gets loose

Sad to report but I'm another purchaser who had a couple of good months of usage then the filter started getting loose and now at least 50% of the time the filter just floats off while brewing wasting another mug of tea.Have a competitor's product that I keep at work that I've had twice as long and use twice as much and that one never has the filter floating away (perhaps because that one is made of metal).