Janet you can buy a gadget that snaps onto the top of the spray can, it's like a pistol grip with a trigger, you can spray all day long & not bother your finger. they can be bought at any paint dept. at any major store for less than $5.00.
Thanks John. I did get one of those with the Comfort Grip after this article was written, along with about a dozen more cans of paint. I love it and would recommend it to anyone that has a menagerie of critters or other BIG items to paint.