Thanks so much for the reply. ^_^ I searched for recent topics about it but couldn't seem to find any.
What I have is Advantage II, extra-large dog size, so we should be good on that front. The dosage we were using before was, IIRC, 0.4ml for cats less than 9 pounds and 0.8 for the ones over 9...
We used to break down dog-size Advantage tubes to treat our large crew of cats, but switched to Frontline for the added tick protection about two years ago. The Frontline stopped being effective (to the point where it does absolutely nothing), so we decided to go back to Advantage II.
However...
