I always purchase my pet products, Feliway, Advantage flea control (I used to use Frontline but apparently the blighters build an immunity to it), and anything else my cats need, from Petwell. The receptionist at the vet where I take them for treatment had advised me to be careful where I shopped as some sites are not reliable and what we think we are getting may be bogus. She assured me that Petwell were a reliable and trustworthy site where I could shop with confidence. Needless to say the vet was not at her elbow when she told me this as they sell these products. I have introduced my family to the site and they now order through Petwell. Their prices are very competitive and delivery is prompt. 👍 B Black