Those are really quality bags. So much that it is a shame to have to throw them out when they are full. It would be nice and I would feel better throwing out paper ones. So I recycle them for a second use.
McHardy's Response:
While it might be tempting to reuse high quality bags a second time, we strongly recommend against this practice. The microscopic openings in the bag, that allows air to flow through, will get clogged with small dirt particles while in use. If you use the bag past it's intended life span (one use) you can cause inadequate air flow reducing suction performance of the machine, and can cause stress on the motor as it has to work harder.
