How Do You Stop People From Driving on Your Lawn and Ruining Your Sprinkler System? [POLL]

People keep driving on our lawn and breaking our sprinkler system.  So my husband and I have devised a plan to retaliate!  Here's what we did:

First off, our plan is pretty passive aggressive. Anyways, we've placed rocks, logs, and other crap on the edges of our lawn. So if someone drives on our lawn, their vehicle gets rocked!  So far it's worked out nicely.

How do you stop people from driving on your lawn and ruining your sprinkler system?  I'd love to hear your advice, sound off on Facebook, call me at 208-737-60-70, leave a comment below, or answer this poll.