Neighbors of mine (we share a chain link fence, their property, which was there where they bought the house) have children that insist on feeding the dogs (I have 4) chocolate

, etc throught the fence and squirting them with large water pistols. I've asked them nicely not to, not working

...
these are small kids (age 3-7)and there are often several in their yard...parents don't speak english and we have had run-ins with them before over damage done by their lawnmover, items "shot" into my house by accident.
is there something nasty smelling (not harmful to the dogs) that I can put out so the kids "go away"?
I don't think they are mean kids, just unsupervised and uneducated around dogs.
roxanne