Only used about 8 times and cleaned between each use to prevent clogging. I've noticed that the rubber on the underside has started to tear and I've never completely removed it from the magazine, meaning not by repeatedly pulling and reattaching. My concern is that the crack will eventually grow larger and allow dust to enter my shop vac motor. long as a brand, but were mostly disappointed. I didn't expect to have to check the durability so often. But I don't want to void the shop vacuum's lifetime warranty.