You want to spray them with something that kills deer?
A spray of bullets? Or if you are in a community that won't let you shoot them,
mik an egg in 1 quart water let it sit a week till it gets rotton and spray.
Works pretty well, but you need to spray often. As previous talks here have
noted, an electric fence is a best antidote for deer.
Dave
http://members.tripod.com/~VideoDave