I was going to buy the canned foam for a home improvement project once but stopped when I read the label. First, what's for sale (discounted) in the home improvement stores is often past it's expiration date and second it specifically says on the label that once opened you are supposed to use the whole can. Once opened, somehow it doesn't "keep" or something. I recall my father having an "open" can and when we went to use it at a later date, nothing would come out.

I might be able to use it to fill a crack or two or to foam an outdoor outlet box, but use a whole can in a day or three? Not likely.