How to annoy your neighbors dogs and cats messing in your garden

My stupid neighbors don't obey the leash laws, and let their pets roam free. I was constantly having to clean cat and dog mess from my yard. It was so bad that when I would mow my lawn the tires of the lawnmower would be totally covered in brown matter, if you know what I mean. So I figured I would give the scarecrow a try. Works great, I have on video two dogs going into my yard to do their business, then the scarecrow blasts them point blank in the face with water. It was Hilarious, one of the dogs took off, but the other one panicked and ran around the circles not knowing how to get out of my yard through the fence, even though my gate was wide open. The dogs haven't been in my yard since. I seen cats get blasted with water too. My neighbors are mad though, because their dogs are now messing in their own yard, and every time they walk in their yard they step in it, very funny. One thing that needs to be improved though is battery life, 9 volt batteries have very little capacity and go dead in less than a month if the unit goes off a lot. It would be great if the unit could run on 4 D cells, then the scarecrow could run more than a year on one set of batteries. I bought lithium rechargeable in order to save money, plus they last longer than alkaline 9 volt batteries. Overall great product and a lot of fun to watch it work.