Advantage II Dosing for Cats

I've been dosing K-9 Frontline to our 3 cats for several years now, but recently decided  to switch to Advantage II, as the fleas weren't responding to the Frontline anymore.  All 3 of them are bigger cats, 12 lbs and up, so according to the dosing charts I've see they would each get 0.8 ml of Advantage II.  I'm a little hesitant to apply it now, since I see the "Do Not Use on Cats" warning on the front of the Extra Large Dog Advantage II box.  Did they change their formula or is it still safe to dose cats from the dog product?  I appreciate your help!

My vet,  along with others posting on message boards,  told me that fleas have developed a resistance to Frontline.  Similar to some diseases becoming anti-biotic resistant.  The  manufacturer is supposedly working on a new formula to defeat the resistance that has occurred. 

My vet told me long ago that she believes Revolution is superior to Advantage II for cats;  however, I discovered a big design flaw when I tried Revolution.  It takes 3 (three) distinct squirts on the tube in order to fully empty the contents.   With some of my cats I don't get 3 chances,  they squirm out of grasp and head for the hills.

So I am pretty much stuck with Advantage II  which takes just one big squeeze until something better comes along. 

As for your question,  I have no experience in using canine version on felines,  so can't really advise.  Personally,  I would be very hesitant to use any product on my cats that specifically says not to do so.  

I have used Advantage 11 on my cat. He also runs if he sees me put on gloves. Maybe it stings. I prefer Advantage Multi.It is a prescription, but it protects against ear mites. It was a nasty, painful, infection for my cat. He had to take a round of amoxicillin. Not very pleasant if your cat bites. He was good about it, but not happy with taking a liquid squirted down his throat. I have raised a feral kitten. He was covered in fleas when hebwas rescued. He was not even old enough to leave his mother, so flea treatment was not possible. I used a flea comb on him with a small dish of water with a small amount of dishwashing liquid in it. Catch the fleas in a comb and put them in the water. They die fast and are not able to jump out of the dish. He was so shocked the first time he wasn't in pain from flea bites! He loves to be combed and declared.