If you buy enfamil formula in the new refillable tub, just beware that the lid is not air tight. I discovered this and thought it was just a fluke with the one I bought but then I checked out walmart and babies r us and they are all like that. I found out because I found a weavil crawing inside the formula and couldnt figure out how it got in there since there is an inner foil packet as well. but I realized the lid isnt airtight. You are much better off buying the regular cans