Hi can anyone give me advice on flea medication?
Murdoch is 4.5lbs & has started to get fleas

He is currently taking the heart worm prevention Worm Shield. I've heard terrible things about Advantage, Frontline & comfortis - can anyone tell me what flea medication would be safe to give to him? Thanks
P.S. I'm new here & not sure how to correctly add a post or a picture under name on the left?