I would like to know how PETCO could sell a product, K9 Advantix, which can burn a dog's skin so severe that the vet says it may kill the skin in the area and leave a big hole in this dog’s neck where the K9 Advantix was applied. K9 Advantix needs a much stronger warning on the label telling of the real possibility of permanent skin damage.
I also Believe PETCO needs to educate it's staff so they may educate the pet owner as to the real dangers of these flea medications and what to look for to catch any problem that may arise. PETCO could even give some advice as to alternatives to these poisons.
In closing, no product should be sold in a store that can cause this kind of damage without some serious discussion at the time of purchase.