Anyone know a good online place to buy Frontline Plus from? Right now I'm looking at 1800petmeds and choking on spending 170 bucks for a 3 month supply this is for 3 cats and a dog but ouch my pocketbook is crying at the thought of it. [EDIT TO ADD] Okay so after reading comments I've done some research around to see if I can use the bigger doses and if swapping the cat and dog medicines are okay. I called my vet and she said it was okay to buy a big dose and measure it out for the dog and cats. I also called Frontline and asked. The first time around they said they recommend the dog product for dogs and cats for cats. So I called again and fibbed. I said I'd used the 22lb dose for dogs on my cat and the cat dose on my dogs. She told be 'The dog dose for 22lbs will not harm your cat, it has been shown to take up to 5x the amount to be harmful on cats. The dog got a smaller dose than he would have but it is not harmful.' I called back a few times over the day and phrased my questions different ways so as to get more answers and more detail and that was the general idea, that the 'doses' are in volume and using a smaller dose of the larger volume is the same as using the pre-packaged dose. Later I called an animal clinic in town and got told they buy the big doses and split it up among all of the animals, my vet said she does this as well on her own animals. The only stipulation I ever got from them was not to 'save' opened packages for later on and if there is leftover then throw it away.