- Adele Danskin
How to identify counterfeit Merial Frontline Flea and Tick Products
How to determine if you have legitimate Frontline products:
This information was provided by the EPA in 2004 and presented for informational purposes only.

If there is a sticker on the outside of the retail carton with information such as the EPA registration number and/or the animal body weight for the product, then it is not
EPA-registered Frontline product. Legitimate products do not have these stickers.
The lot number on the retail carton should match the lot number on the applicator package insert and/or the individual applicator.
The instruction leaflet should be included. It provides the following information: first aid statements, including emergency telephone numbers; precautionary statements for humans and pets; directions for use; frequency of use; and storage and disposal statements.
The product should be packaged in child-resistant packaging. The directions for opening the child-resistant package contain illustrations that actually look like the applicator package insert. The directions include "To Remove Applicator: Use scissors or lift and remove plastic tab to expose foil, then pull down."
The individual applicator should have a label that includes the:
- Registrant's name (Merial), and the product name;
- EPA registration number the net contents in fluid ounces (fl. oz., not metric measure, i.e., ml);
- Percentage (%) of active ingredients. (Fipronil for Frontline Top Spot products, and Fipronil and (S)-methoprene for Frontline Plus products);
- Animal on which the product is to be used;
- Statements: "CAUTION, Keep out of reach of children," and "See full label for additional directions."
Counterfeit versions of the following EPA-registered products have been identified.
- Frontline Top Spot for Cats (EPA Reg. No. 65331-2)
- Frontline Top Spot for Dogs (EPA Reg. No. 65331-3)
- Frontline Plus for Cats (EPA Reg. No. 65331-4)
- Frontline Plus for Dogs (EPA Reg. No. 65331-5)