I kept finding dog crap in my yard and didn't know where it was coming from,until the neighbor across the street who was a cop ,told me that it was my next door neighbor.
He said watch what he does when your home on saturday. He had a Labrador retriever and would throw a tennis ball into my lawn. The dog would run and get the ball,then take a massive dump.
So I would pick it up and toss it back into his yard. When he cut his grass, he would stop and look around in astonishment. I know he was thinking were in the hell did this come from.
From that point on I threw all dog crap I found in his lawn. What a SUCKER he was LOL!!!!!