Been there, done that. Had a crackhead next door with up to five little dogs. Open the door, out the dogs come, poop in my yard, over at my fence firing my dogs up.
After many shouting matches, I called Animal Control. She got a letter asking for the license numbers of her dogs. Bet that cost her a pretty penny. They told me to get pictures of her dogs on my property. She saw me taking them and they never came over here again. Her losing her house was the happiest day of our lives.
She wasn't mean to her dogs. Her daughter was and I reported her for that also.
Report them and then, watch nothing gets thrown over the fence. It's a living hell having dogs when someone next door with dogs is irresponsible.