Contacting animal control is really the best bet here. I agree with the poster who said to phrase the phone call as “what do I do about this” and not a complaint.
Pepper spray, wasp spray, BB guns, baiting a dog with milk bones to hit an electric fence etc etc are all well and good but I think you need to be REALLY careful about that. Unless you have it on camera biting and then you immediately retaliating with those things I worry about it becoming a “look what this neighbor did to my dog for no reason”. And I actually think baiting dogs with milk bones is illegal depending where you are.
I’m not defending the neighbor, as someone who regularly deals with dogs coming over and attacking mine, going after my chickens and horses etc, I am all for OP stopping the dog from coming over. We’ve had animal control out, had them talk to the neighbors, and had them tell us we are in every right to shoot the dogs if they come back. But I feel better doing what I need to do after animal control has talked to, fined, and warned my neighbor.