BB gun, the pump up kind see if you can get some rock salt small enough to fit in it, cut the end of a Qtip off and load it like its a BB. then put some of the rocksalt in the barrel, almost like a pnuematic ML shotgun, only mini. then pump it up till your arms are sore. when said dogs come around, shoot em in the A$$ with it. see if that works.
Beware of any old man in a profession where one usually dies young.
