I spray the larger dogs, have done it many times. They don't seem to
interested in the chase after that, mainly rubbing their face on the
pavement.

The smaller dogs I just kick the living crap out of them. Never had
one come back for more.

Sport horn works well. They don't like loud noises.

We have an absolute leash law. No dog is allowed to
be loose at any time. Fenced or leashed period. If
your dog causes damage you are responsible.
You can trap, club, spray or what ever any stray
dog on your property.