Help With Fleas Please: 12 dogs, 3 kids, 1 house

DawnMarie77 writes: "I need some serious help. I have 2 large Rottweilers that are seriously allergic to fleas. They are both pulling out their fur on their bottoms. The vet wants me to bring them both in and all the puppies at $35 apiece when we already know what is wrong. (The vet) wants still to sell me a bunch of medicine for otherwise healthy dogs. They are healthy weights and have good tempers and appetites..."