Be carefully when buying off ebay. There are a lot of counterfeit frontline plus on there. Real frontline doesn't have an expiration date on it. The boxes that have the cation on top are another indicator that it is either counterfeit or not approved by us EPA.i get all my kits from
Home Frontline Plus Kits Online Store Powered by Storenvy they sell kits and retail boxes which are all us EPA approved. Hope this info can help sum1 with the economy every little bit saved help.