I also haven't had a problem with my powder paint in I've had some for over a year now. You deftly want to keep it in the house like everyone else. As mentioned above, you do not want to put this out in your garage or some place like that were it can get damp or heat on like they have mentioned but if you do have to put it someplace besides the house. I would make sure that I put it in a well insulated box .