calliecritturs
Posted : 4/21/2009 10:42:19 AM
Xebby is right -- this is a subject that tends to raise hackles sometimes.
For ME & mine -- I won't use anything systemic. Meaning, I won't use anything that seeps into the skin and goes into the bloodstream to 'linger' there. So I will *not* use Revolution, ProMeris, BioSpot, Hartz, and even Advantix
I do use Frontline spot on, Frontline Spray and given the horrific flea season already underway in Florida I'm going to alternate with Advantage this year (mine get bathed pretty often which makes Advantage expensive)
It's not a matter of prescription or not -- it's a matter of how it works and how deep into the bloodstream the toxins go as far as I'm concerned. Frontline products stay in skin pores and hair follicles. Advantage crystalizes on the skin. The others sink into the skin and stay in the blood stream. I don't want pesticides in my dog's body lingering there.
For Heartworm Prev. I use Interceptor -- it works on not only heartworm microfilaria but also hooks and whips but it still only stays in the body 24 hours but doesn't have a bad failure rate (HeartGuard is getting a bad reputation for failing, and so does Revolution to be honest, despite its systemic nature).