To effectively kill fleas in your home, you need to treat all areas where fleas are present. This includes carpets, floors, furniture, pet bedding, and any other areas where your pet spends time.
Flea sprays usually come in aerosol cans that allow you to target specific areas for treatment. Be sure to follow the directions on the label carefully. Some products require that you saturate the area with spray while others only require a light misting.
If your home is infested with fleas, you may need to treat more than once to completely eliminate the problem. Treating every two weeks should be sufficient, but if you continue to see fleas after two treatments, consult a pest control professional for advice.