This is my first commercial smoker and my first in 10". I've used it for 6 hive inspections. My goal was to inspect my three hives without having to relight and repack straw. I'm not getting the longer work time. This is the only reason for 4 stars. Maybe it's my fuel as the pine straw does burn fast. I'm getting it lit and going and really pack it in to provide enough fuel for all inspections. I like the hinge, the cone capped fits nicely. Bellows really puff a lot of smoke with one squeeze. That is really cool!