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I am in no way shape or form arguing with you, debating this, or starting anything. I just wanted to share my 2 cents. I am/was a vet tech. While working as a vet tech I went to a few conferences on some of the various products such as Frontline. Keep in mind, these were not sponsored by the product manufacturers. They went into the science of different products (Drop form) flea killers. Over the counter medicines like Hartz, or anything you can pick up at
walmart..Walgreens, etc are BAD business. They have known carcinogens in them and the level of toxicity has been known to immediately kill extremely sensitive animals. However prescription flea killers like Frontline (Mostly, the expensive ones!) work off the dog's lipids (Fats) by soaking into the fatty tissue.. they're not a "poison" like you're thinking. They're a sort of enzyme that is in fact toxic to fleas, but little else. They destroy the fleas neurological system, and make unlaid eggs that survive to be laid unable to hatch. As disgusting as this sounds, Frontline specifically can be overdosed by 100 times (The most I personally know it has been tested at) and even drank by a human up to a 100 doses with absolutely zero side effect. Just because something is toxic to a particular critter doesn't mean it's dangerous otherwise. I believe wholeheartedly in the prescription lipid absorbing flea products.. the OTC ones are the dangerous ones.
First let me say thank you for the informative post. I totally believe that what you are saying is the truth because I have had more than one vet/vet tech say very similar things BUT my mother's dog had a horrible reaction to some flea drops. Please know that this dog was extremely small and it was not frontline that was used. I think it was something called Bio-spot or something like that. Anyway now that I have that out of the way, is there ANYTHING besides drops that can be used on DOGS effectively? I know collars are useless and sometimes a very unhealthy choice for the tiny breeds. I did use one dose of the hartz brand drops on my dog but now I am hearing horrible things about that product. I just can't afford the frontline at this point in my life and I do not intend to continue with the hartz drops.
Bio-Spot has been shown to be extremely dangerous. I've heard story after story AND I've seen several cases through our vet's office regarding severe adverse effects from Bio-Spot.
One of the things I tell people is to NEVER NEVER buy any "over the counter" flea meds. Flea meds should come from your vet; I've just seen/heard so many horror stories about Hartz, Bio-Spot, Seargent's, etc.
Oh, and I use Advantage. It lasts around two months on my pups, no problems ever.
http://www.viewpoints.com/Bio-Spot-Spot-On-Flea-and-Tick-Control-for-Dogs-review-0b5d2
http://www.biospotvictims.org/
http://vetmedicine.about.com/library/viewers/uc-flearx.htm