I purchased Frontline Plus from an online retailer based in UK and it did not work. I was unaware of these issues until I had already treated my kitties with this ineffective product. Based upon the pix indicating fake products, the Frontline Plus I purchased did have orange stripes on the back of the individual doses, had an exp. date on the package and no notches at the top. Satisfaction is supposedly guaranteed. Lets see if they refund my money