I don't reuse them. If I get a snake it goes to QT and I assume everything that came with it could be contaminated as well. Thus all bags and boxes go straight into the trash. Just not worth the risk IMO.

And as I buyer, I would be VERY upset if I received a box that had been used before for the above stated reasons. I don't know where that box has been and don't want boxes that have been in contact with unknown collections coming into my collection.