Put up one of those mosquito noise teenager deterrents that they use outside some convenience stores. It would probably have the same nauseating affect on dogs.

Try getting your parents to talk to him, since given how you talk you obviously aren't the grownup of the household.

Scoop it up and deliver it to your neighbor! Personally!!! Tell him he left something of his in your yard! If he gets indignant explain that next time it will be delivered without the bag and just dump it on his front step!

That's when you take his dogs crap and rub it on every door handle on his house and car.

Or build an electric fence.

You're in Arkansas! Shoot the dogs first and the owner later if he does it again...

Target practice with water soluble paintballs?

Tell him to funk off

id put it all in a bag and pour it all out right infront of his door

cool story bro.