calliecritturs
Posted : 10/30/2007 9:06:19 PM
Frontline is one of the GOOD ones to use (Frontline Plus more specifically) -- things like Revolution, Biospot, and to a degree Advantix are systemic. I don't know a lot about Advantix, but iwth Revolution and Biospot the flea has to BITE the dog to die.
That's bad. Because it is the flea 'spit' that an allergic dog has problems with. Yes, they are literally allergic to the flea spittle -- and it acts like a serious long-lasting toxin in the dog's body. So once the dog is bitten it causes weeks/months of problem.
Advantage and Frontline kill on contact. Advantage crystalizes over the skin and Frontline pools in hair follicles and skin pores (not hardly at all absorbed ... a tiny bit of the inert ingredients may be but not the active ingredients).
the problem is some fleas seem to be resistant to Fipronil at this point. Altho I keep hearing different things -- some attribute it to some particular dogs and others say it's the chemical.
I *do* know in my case that both Billy and Luna do FINE on Frontline topspot. But I have to use the spray on Kee -- the topspot seems not to work well on her. dunno ...