CaptainF
The Professional Poster
I never realised how much of a problem deer were in some areas until I visited my aunt in New Jersey. Almost every day there would be deer eating her garden, and eating the seeds in her birdfeeder. Unfortunately I didn't have a paintball gun, so I just threw sticks and rocks at them.
Just get a slingshot. That would scare the piss out of 'em. A nice metal pellet to the ass should do the trick.