I love Advantage! I live in Suffolk, Va on 15 acres. I have 4 dogs and 5 cats, plus do cat rescue I use Advantage on all of them. Here is also another safe way to control fleas:
If you would like an easy effective way to rid your home of fleas try this...
it has worked for me for over 14 years.
Get 20 mule team borax at walmart or where ever. You will need 2 boxes at least.
Start room by room
Day 1-- Put a new bag in your vacuum to maximize the suction of your vacuum cleaner. Pull out sofa, chairs and any other furniture from walls and vacuum the floor thoroughly first and then sprinkle the 20 mule team borax on the carpet, all over, move back furniture and continue around the room vacuuming first and then apply the powder borax to all the floor.
Empty vacuum cleaner bag in outside trash can when finished vacuuming all of the rooms to contain the adult fleas and leave 20 mule team borax at least overnight on all floors . Also vacuum fabric furniture crevices and under cushions and sprinkle the 20 mule team borax into all of the crevices of sofa and chairs that are made of fabric and under cushions too, leave it there do not vacuum it up. Launder any small rugs, bedding or anything the pet has layed on to remove fleas and larvae from them.
Day 2 --Vacuum around furniture but NOT under it leaving the borax powder under all furniture (fleas lay their eggs in dark places and the larvae hatch out and remain there crawling around in the borax and die. No larvae=no fleas
Continue around your whole house leaving the borax powder under all furniture, even under beds since pets like to hide there.
Any place your pet lays down a flea can jump off and make a home so wash pet bedding also.
Vacuum all floors daily for 1 week around furniture but not under it.
It takes a little time the first time you put it down but you are good to go for the rest of the season not needing to replace borax until next year if you choose.
To rid house of other bugs also put 20 mule team borax under frig, stove, washer, dryer.
It does work for many bugs, roaches etc...
Safe to walk on, will not harm carpet, people or pets.
Rid the environment of the fleas and their eggs and everyone will be very happy you spent the time and spared them the bad chemicals.
I have never used flea prevention on my pets just as I don't expose my family to the chemicals either.