It is not that it has to be approved. Is that they need a prescription.
(had to remove link) OP just read some of the above is not accurate. I have talked to my vet about it we lived in Colorado in dry climate and the vet still didn't recommend frontline. Frontline is supposed to work before the flea bites. No vet will recommend you buy the junk that is sold in store Hartz pet product. We live in a rural area where there is ton of rabbits, we rescue dog invested in fleas an we never had a flea problem not in our dogs, not in our house, not in our cats. My best friend dog is extremely allergic to flea bites and her dog is in our house 2 times a week and she never gotten a reaction here. Not because there are not fleas out there but because our pets are treated for it with the right products. OP please consult with your vet what he will recommend for the area. But from what it seems the kirkland brand has in it I will stay away from it.
If you are going to quote me, please point out what part I got wrong. Telling me what you vet says is pretty stupid don't you think. A most vets sell Flea and tick products also most require an office visit before they will give you a prescription. They don't want you to use a product you can get at any pet store with out a prescription. That said even if you had an honest vet, who cared, he could just be stupid. Lots of vets and doctors are stupid.
I am sorry I have read scientific studies on the subject. Independent and verifiable studies. Yes some flea medicine have chemicals do disrupt fleas before they bit, but in test it hasn't show to be that relivant. Eventually the flea will find the host.
Old Flea collars used to "repel" fleas. Most were junk and didn't really work. Modern flea and tick collars have chemicals that slowly get absorbed into the dogs skin and are highly effective.
I lived in Colorado for 7 years. Most domestic animals in Colorado will never need free treatments. The only animals that carry flies are typically wild that tend to live in dens and in the ground where the humidity is high enough for fleas to grow to adults. So if your pet gets fleas its because he's been exposed to Rats, Foxes, Skunks or some other wild animal.
Yes there is a huge myth out there even among the vet industry about Frontline+. I am sorry but its still a great product, its just as effective at handling fleas as any others. Yes the fleas will live longer after a bite, but they will die, they won't lay eggs or be bitten more times. Frontline+ has far less side effects then others. If you use frontline+ and you still have a flea problem, its not frontline+, its your house, yard or something else.
your prescription meds that kill faster will seem like they work better because you will be far less likely to see the fleas as they would of died and been brushed off by scratching. Your dog still gets bit, your dog will still suffer, your dog will still be exposed to possible diseases.
I also was very clear that frontline+ is far more effective against fleas then just frontline. So if your vet spoke of frontline, then he is correct, if he spoke of frontline+ then he is either a liar or stupid.