I did not read the post regarding "puppy has fleas" until I had already put Frontline on again. The reason I was not worried about it, is the people at Petsmart told my husband to put Frontline on again after bathing. This flea bath stuff is "De Flea" Pet shampoo. Active ingredients: Dioctyl Sodium Sulfosuccinate, Undecylenic Acid. It is made by "Natural Chemistry"... Puppy seems o.k. He is sleeping, but he is only 8 weeks old and has had a rough day!
I am only familiar with Frontline for cats, and I know that for cats, you normally shouldn't use flea medications until they are 12 weeks old. This might be different for dogs. Sorry...I'm not much help. Doesn't it say anything on the package? Or is there a number you can call?
I am not sure about the frontline. Oh far apart were the baths? I use to use the once monthly, but I have switched over to the Deflea Pet and Area Spray, which I love. If you look at there site which I think is Naturalchemistry.com I'll look to see, is great! 100% natural and you shouldn't have to worry about overdosing it. I use it every time I groom, and sometimes in between, the frontline didn't work for me. I love the DeFlea products.
I have double dosed a dog before with Frontline and the dog had no adverse reactions to it. I picked up a rescue Pekingese/Chi mix I was told she was due her flea preventative so I took her home and gave her the Frontline treatment right away 30 minutes later I get a phone call from the rescue saying DO NOT give her Frontline she had it 5 days ago. Well, to late... So I expected the worse but she never showed any adverse reactions whatsoever.
The best time to put it on your dog is a few days after a bath. So's the dogs natural oils can come into play, so to speak. Usually a person will give their dog one to two baths maybe three in one months time, so it does stay. What it does is it soaks into their fat cells. Thats what I was told. There is more likeliness for it to wash away if you put it on then bath the next day or so. Congrats on your new pup.