When in doubt, whether it's glue or degreaser, lube, etc., I always start by making aerosol products my last choice.

Not to go all "greenie" here, but there's issues with quantity purchased (thus cost), overspray/messiness, cans that go "flat" or otherwise leave unused product behind in the can, clogged spray tips, broken nozzle or spray head, and so on.

To the plus side, where an even application over a large area is really needed, sprays can be the most convenient way to apply a substance.

I have to say that I see so many (many good) things today that I think should never have been put in a spray can...

Very informative thread so far.