FRAUDULENT SITE! They don't tell you they're in Great Britain. They have a PO Box in Missouri, but NO location. The products they display on their site are NOT the ones you will receive. Their Advantage flea is one that has been in the news as possibly lethal to small animals. IF YOU VALUE YOUR PET, DON'T BUY FROM THEM! The reviews that are good are quite possibly of their own invention. BEWARE!