I ordered Frontline Plus for my two dogs. I ordered a 6 month supply of each. The frontline did not work at all so i called to return or exchange them for a product that will work. They will not do an exchange or a refund because i used one of the 6 vials. They hide their horrible return policy in an inconspicuous place making darn sure nobody ever sees it (which is illegal - if you have a return policy that differs from the standard you are required to post your policy in a CONSPICUOUS place ensuring that the consumer will see the policy before purchasing the product) They are very rude, you cannot call and talk to anyone, you have to leave a message and wait for days for a return call. If I could give zero stars I would. I have nothing good to say about this company.