I do like Alvin and buy it by the quart. And what I do if I have some left in the can is take some plastic and put it between the lid and can then use a rubber mallet to seal the lid. That way the por15 won't dry the lid to the can. Then I put the can in a large zip lock bag. I have tried some differnt stuff like Zero rust and such. But por 15 is the best I have found.