used to be and still is to my knowledge according to state law if you did not have livestock you didn't have to or weren't obligated to repair fences. owners of cattle were. if you can determine who the owner of record is, and you notify them then they have 30 days to remove them. if not done in 30 days you can legally load them up and sell them for damages. now, if you plan to go this route make sure you have witnesses, might even have sheriff with you, that you notified them. if I planned to sell them I would actually send a registered letter. I had the same problem, talked to nearest neighbor (he said they weren't his also) and the problem disappeared. cattle seldom run through several fences, maybe one, but they seldom just keep on going. probably they're your neighbors and they just don't want you to sue them or something. if you chase them and they know exactly where to go each time to get through fence you can bet, they are. just a thought, next time you talk to neighbor tell him you're running them out in the road. DONT but threaten to. if a car hit one and someone is injured or killed you can lay money the law will find the owner