Last year I had a BIG problem with fleas too. I used diatomaceous earth both inside and out, sprayed the house, vet gave them pills, frontline, everyone (also the cats) got bathes every week. I looked like a monkey as all I did was pick and kill fleas on them

What worked?, an exterminator he had to come to my home 3 times. They come and spray to kill the fleas then come in 2 weeks to kill the fleas that hatched but I still had fleas so they came a 3rd time and now we are flea free!!