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Originally Posted by chestermama  the fleas have to bite, in order for it to work, I think the spinosad kills them by interferring with the nervous system of the flea |
That's right, I've done some reading and spinosad is an insecticide (farmers use it) that goes into the blood of the pet who is on Comfortis and when the fleas bite it paralyzes them, etc., and they die.
Comfortis can count me out-----my 'girls' won't be taking it nor any of the other products like it.
