I just got a new Lab and Catahoula mixed puppy 7 weeks old. I bathed him with a flea shampoo for puppies yesterday and today I washed him with dawn because some people said it would help. He still has fleas and is miserable. I rescued him because his previous owner was going to shoot him :/ I cant stand to see him suffer and scratch all night long. His little sister has fleas as well so we’re trying to keep them apart untill their both clean. Can someone please help me?