First of all... fleas will NOT kill a litter. Come on folks. FERALS do NOT have flea protection ... and they breed CONSTANTLY.
It isn't *great* if the mom has fleas, but it will NOT harm or flipping KILL a litter. Let us not scare and over-dramatize things or give bad or erroneous information, you know?
Second, putting Advantage on a queen about to BIRTH was really BAD
advice. Nursing or pregnant cats should NEVER EVER EVER
have Advantage OR Frontline applied to them!! READ the warning labels, PLEASE for ALL medications on your animals and PLEASE abide by the warnings!! They are put there to prevent you from harming or killing your pet!
I have NO idea where this notion that fleas will kill kittens comes from. It's not great, and it's a vector point, but my god, don't poison and potentially kill a litter with flea protection ... you can always use a flea comb and dip the comb in rubbing alcohol to kill the fleas on the comb.
This is a GREAT time to make the point too - to NEVER blindly follow medical advice on the internet! PLEASE always verify such advice by googling on it or asking a vet or READING the labels on the product.
This is not meant to slam the original poster.
Now obviously the kittens are still alive, so ... likely nothing bad happened by using the Advantage. But you were *lucky*! They have those warnings because when they did studies, litters died or had birth defects or the mothers died. They didn't put those warnings on the labels just to be killjoys, but to protect them from lawsuits.
So yes, while it is BEST for the mother to be de-loused before she gives birth ... it is NOT required. Kittens *can* become anemic quickly from fleas, and fleas are a disease vector. BUT stray and feral cats give birth to THOUSANDS of litters every minute of every day in holes, and garbage, and you name it, and those litters LIVE and flourish *just* fine! Otherwise we would not have an overpopulation problem! LOL
So let's not give out bad and wrong information, or scare folks into doing something way worse than if they did nothing at all.
And for the record, Advantage only works for ADULT fleas. It does NOTHING for the eggs or larva. You will have fleas, as a result. Hopefully nothing harmful will happen to the kittens because of the poisons in the Advantage. but they will STILL have fleas. And they will not die unless you allow the fleas to get that bad to where the kittens become anemic.
Because Advantage, Frontline, and Advantix have warnings about being used on pregnant or nursing animals, I would not use these EVER.
Also, do NOT apply these products to the newborn kittens!! EVER.
Just use a flea comb or pick the fleas off with tweezers and place the fleas into a jar of alcohol or dip the comb.
Then use flea control methoprene premise sprays to control the fleas in the room, since the kittens will be contained in the nest for a few weeks, so they should be safe and not wandering too much.
You are doing good! And bravo for caring for these babies and the cats in general!
Just don't believe everything you read and check check check before acting and always read the labels. Warnings should not be ignored. They are there because other animals died or had serious medical issues.
Just my 2 cents.