Folks, I agree that dogs should use their own yards, but I can't image stressing myself over someone's dog using my yard to potty...unless they don't clean up naturally. It's just their nature while walking to mark area's. To stress over your lawns with such; is just petty....worry about the weeds in your yards first!
I take pride in my lawn trust me, let's all learn to not sweat such small things in life, your lawn is the least of life's issues!!!!