I wanted to find out which flea meds to watch out for, so I did a search on Pyrethrins. I found a website that lists the chemicals used in flea products. K9 Advantix is on the list of products that use Pyrethrins and Pyrethroids (permethrin, phenothrin, etofenprox, fenvalorate), which are the chemicals discussed in the clip.
The website is here.
So beware! Assuming this website is correct, Advantix does contain these chemicals.
For flea and tick prevention, I usually use safer natural products like shampoos and sprays containing NEEM oil and sometimes other essential oils (eucalyptus, cedar, citronella, rosemary, etc.), which work very well. When I occasionally get a flea outbreak I use Frontline.
(Note: people should take care when using essential oils with cats, or not use them at all -- I'm not sure because different sources say different things.)
I've always used Frontline Plus on all my pets (dogs and cats) and have never had a problem. I work for a vet and have seen what the other products, bio-spot, hartz, etc. can do to pets. In fact my daughter (who should have know better) applied hartz to her boyfriend's cat. Cat almost died thank goodness they had enough sense to wash the product off with Dawn and get to E-vet. The cat survived. I'm not a fan of natural products have used the fly spray for my horses and it just doesn't work. But that is jmo.