Is it harmful to give your dog two frontline doses within a month?
Is it harmful to give your dog two frontline doses within a month? General Dog Discussions
When I found fleas on my dog, I ran to the pet store and bought frontline. When I applied it to my dog's coat, he shook, so it spread onto the hair instead of being absorbed into the skin. So, now that it's been two or more weeks, he still has fleas. Would it be dangerous to apply a second coat, even though it hasn't been a month, because the first dose didn't work?