I live in a residential urban area along with many dog owners. On a daily basis, I observe those dog owners allowing their dogs to defecate on other peoples' lawns. I view this action as a trespass and violation of property rights, whether or not they pick up afterward. (For those who believe that picking up after your dog mitigates the trespass, would you let your child play on that spot afterward?) I don't believe that property owners should have to create fences, hedges, or other structures to prevent this trespass. On several occasions, I have asked owners not to let their dogs poop on the front lawn of our apartment. I have received various responses from polite acquiescence to incredulousness. Many dog owners seem to feel a sense of entitlement about using others' property without permission. Isn't that wrong? Would you agree that it is the SOLE RESPONSIBILITY of the animal owners to care for their pets without violating the rights of the people around them? What, if any, recourse would property owners have in a free society against blatant repeat offenders of this principle?