#1. When you mow your lawn, mow that one too!
#2. When you see some one in that yard, go introduce yourself. Pictures are a great deterant to loitering.
#3. Wait for someone who is not affected by this house, take care of this for you.
#4. Spend hours and hours fretting about something that you can resolve in minutes.
As Hillary said years ago, "IT takes a community to raise a child."
I would add, "It takes good neighbors to make a community."
Just do what needs to be done. Everyone else will spend their time looking for someone to blame or excuses for their inaction. They don't do that in NJ do they?