Moggies recommendation: Only buy a flea product from a qualified veterinary practice.
Solicitors of a certain flea drop product have demanded this article be removed.
As stated above, never, ever buy any product from any pet shop, always buy from a reputable Veterinary Practise. Me, personally, I would never buy any medical product from any petshop, even if my cats life depended on it, there are always natural alternatives. And that is MY personal view, one I am entitled to have and publish.