Where we get our methanol we have the choice of refilling ours or exchange our empty one for a full one. When exchanging they check to make sure ours was clean and not in any shape damaged. Bad thing with exchanging is you may get a color you don't want. Personally I like the white ones, but when we exchanged last time I got a blue one. (Blue ones are harder to see through, to know for sure how much you have left.) I've heard they will pay $10-15 for good empty drums if people have left overs.