The very first thing I do with those cans is cut that plastic ring off. When a can of Danish oil gets gummed up I usually have other cans of mineral spirits or acetone that I empty and just save the caps. Those cans at HD do come with lids and can get in quart or gallon. I will usually put left over room paints in them and label. When I pour danish oil back in can I use a funnel designated for this. I am constantly pouring in and out of those cans. I love my Watco Danish oil. When Home Depot stopped carrying it and Watco stopped making it I was a maniac going from Homer to Homer buying up all I could and I still have some left which I am guessing maybe 25 years ago. The new stuff when they got so many people screaming for it and brought it back on line they changed the formula to meet certain guide lines and it is not quite the same but still good stuff.