The best way to keep fleas off your pet and out of your home is to use a monthly flea medicine like Advantage year-round. Fleas can be brought inside the home at anytime of the year from the outside environment by other animals or even us humans.
To apply Advantage, part the skin behind your pet's shoulder blades and squeeze the entire product in one spot. For large dogs, you can apply Advantage to three or four spots down your pet's back. After three to five minutes of applying Advantage on you pet, the fleas will stop biting. And after just 12 hours, 98 to 100 percent of the fleas will be dead.