Kelsey is always itching. Every now and then I'll notice a flea on her. Not multiple ones' but one or so. I put Frontline Plus on her every month and bathe her regularly. I don't think she has a skin allergy or anything...The vet told me to get a soap free shampoo and to switch to advantage for a little while. She said it works faster for fighting fleas than Frontline? I was just wondering what everyone used and how effective it was.