Hi there! My fiance and I just got an 8 week old German Shepherd/Lab mix a couple days ago. He has fleas and we are going to take him to the vet Monday to see what kind of treatments they have to offer. My fiance's aunt and uncle were petsitting him and I had already told them no flea baths! Well.. When we went to pick him up, his uncle said he gave him a flea bath. The bottle clearly says DO NOT USE on puppies under 12 weeks of age.. Which is probably not there for no reason.. Now I'm worried because I know flea shampoo is harsh even on adult dogs and he's just a puppy. Will any horrible effects come from this? I'm really worried!