My Fuzz is a bug magnet; fleas, mosquitos, gnats, flies, ticks - you name it, they LOVE her! And of course, she has flea dermatitis, too! About a year ago she started getting itchy and things went down hill quickly. After buying every "natural" product on earth, I found DeFlea shampoo and it worked! It not only killed the fleas, but her dermatis calmed down, too! Within about a month, she was no longer itchy, all her hair grew back in and she is my happy comedienne again! Of course, with two other greys and three cats, everyone was treated with a topical: Frontline for the canines and Advantage for the felines. As long as I treat everyone at the same time and stick to a regular schedule (I stretch it out to 5 weeks in the summer and 6 in the winter), it's not a problem and you KNOW that fleas are a constant battle here in FL!