[Ellie May]

Is he on flea preventative?

Honestly, it's probably not their fault. Dogs come in full of fleas. It's nearly impossible to make sure there are none crawling around there. I'd give them the benefit of the doubt and assume they try to control the problem. If your pups go to the groomers, they probably need to be on a monthly preventative.

You could use Frontline or Frontline Plus, Advantage or Advanage II or Advantage with Program, Program and Capstar, Comfortis, etc. depending on if you want to get it over the counter, if you just want to kill the adults or if you want a growth regulator included so they can't reproduce, etc., etc.