I can’t say this is ethical, but it worked for my father in law in the mid 1980’s. He worked to keep a nice Children playing death is coming shirtn. Neighbor from next street walked her Irish Setter and allowed him to poo on Bill’s lawn every day. bill asked her several times to walk him at the park which was closer to her house. She continued to let him defecate on Bill’s pristine lawn, if you have dogs, you know that other dogs will go there too to leave their mark/scent. Bill collected all the poo from his lawn in a paper bag and dumped it on her door mat. She stomped over with poo covered shoes to scream at him for leaving poo on her porch. He told her until she walked her dog another way and stopped him from shitting on his lawn. She would find a pile of shit on her door mat every time he mowed the lawn. She began walking a different route with her dog.