Hi All,
Just remember regardless what the companies say that this works better or faster blah blah blah...........
Fleas are obligate parasites and most will feed before they die regardless of what product you use and what you have been told.
I took part in afield trial some years ago with Advantage and Frontline Top Spot and Frontline Spray On. Most fleas fed before they died.
A derm vet friend of mine recommends Capstar the fastest acting flea knockdown (it only lasts for 24 hours but kills 100% of fleas on the dog in 8 hours) she recommends Capstar for Flea Alergy Dermititis and to make sure that they are keep away she has clients use a Flea growth Inhibitor like Program.