He did not actually say they were on his property, just in front of his house.
I think he should move. He recently bought this house and was upset because he did not get floor plans. Then he finds that the ac is not up to his standard and wants the builder to replace the units. And now disturbing and dangerous soi dogs. Since this is all within a couple of months it is likely to be more so just move, sell the house and get some help finding a place without so many problems.