said by Babaganooosh :

Just let them take the shortcut. Easiest solution I think. It's not the end of the world.

Whatever happened to friendly neighbors?

said by rgoltsch :

A few well placed, and highly visible, dog turds should do the trick. Make them think they are going to risk walking in a minefield and they might choose another path. No one likes to be cleaning poop off their shoes.

We have a weimariner, so we have plenty to spare if you need to come pick some up.

Ron

said by nunya :

You could spray them with a hose (They even have motion detector sprinklers for "deer").
Also, put on a stained "wife beater" shirt. Set up a lawn chair and drink heavily. Smoke a few pack of cigs while you're out there too. Then, when people walk by shake your fist at them and call them "whipper-snappers".
That oughtta do it.

Seriously though, I'd start with a "No Trespassing" or "Keep Off Lawn" sign. The deer sprinkler would be *extremely* entertaining - you must admit.