If you have been following this issue for any amount of time, you know that the EPA issued a flea product advisory back in April 2009 related to the spot-on flea products.
Reported negative reactions from topical flea products increased 50% from the previous year which resulted in 44,000 severe reactions and even deaths from selected products.
Then in May an update was made to the EPA website followed by a meeting with representatives of some of the major flea product manufacturers, veterinarians, and other officials.
An update on the issue is to be released this October but in the meantime you can check on the EPA flea and tick scrutiny here.