What do others do when neighbours kids tease their dogs.

I'm at my wits end with worry as "visiting" relations seem to take such delight in teasing our dogs.

So worried last time I didnt leave the dogs out alone in "their" garden.

Kids are only 3/4 but shouldnt be left to do as they like should they?

If we build a fence it looks obvious but if anything happens it going to be our dogs fault.