[Maedchen]

If he's allergic to Brewers yeast (get's itchy or yeasty ears) you can also give a Vit-B complex. It's the B-vitamins that keep the fleas away, not the garlic. Dogs don't perspire through their skin (like we humans) so it doesn't really has the same repell effect as it has in us.

But I give garlic in the summer months as a blood cleanser since I don't do HW meds.