Hi, is anyone else struggling with fleas? Treated dog (and house, and bedding) with Frontline multiple times in the past two years, but she never seems to be flea-free. None of us have bites so the house couldn't be that bad. I have bathed my dog and rinsed in water with vinegar in it – doesn't work either. No actual infestation or flea dirt present, but the Frontline is not killing the live fleas, and I can't get rid of them from the house, clearly, or they wouldn't still be bothering the dog. Do I need a professional? Jeez, does my house actually need fumigated? I am so embarrassed by this and not much fun for the dog either.