A San Diego neighborhood is in an uproar because a man spread chocolate on his lawn to deter dog walkers from allowing their pets to evacuate their bowels on his property. The homeowner, identified as "John" in this NBC San Diego story, says his "experiment" was a success, because dog walkers have avoided visiting his property. Chocolate is poisonous to dogs because they can't metabolize theobromine rapidly enough. (Theobromine has been tested as a way to poison coyotes.)
Some of the man's neighbors have complained to San Diego County Animal Control and the San Diego Police Department.