Product Workings

is composed of two active ingredients Imidacloprid and pyriproxyfen. They work on different elements of the flea cycle, but both are considered contact medication. F2 was formulated to assist animals that are prone to dermatitis, an allergic reaction to the flea's saliva. Your dog would experience extreme discomfort once the flea bites. The flea saliva is very irritating to most animals but extremely to many. Fleas attack their host quickly, and each flea can lay up to 50 eggs per day.

F2 stops the live fleas action and prevents the cycle.


Imidacloprid works solely on the adult flea to over stimulate their nervous system. The contact between the flea, and the hair and skin of the dog or cat creates the reaction to begin. Within 5 minutes of contact, the flea's mouth locks up and can't move, eliminating the fleas chance to reproduce.

Imidacloprid continues this action until the fleas neurological system causes it's death.

Pyriproxifen is a known Insect Growth Regulators or IGR, it works primarily on the reproductive phases of the flea (Egg, Pupae, Larvae), it renders them sterile and innate. Pyriproxyfen works within 5 min of contact it renders the fleas jaw frozen, enabling the flea to bite.

Pyriproxifen will also kill any adult flea, which may have developed an immunity to Imidacloprid, it shortens the life of the flea to approx 4 days.

As many as 5-10% of all the fleas, actually live on your dog or cat, the rest live in the environment as eggs larvae and pupae. It usually takes a minimum of 3 months to gain some sort of control of a blooming infestation. Many cases take longer. You have 2 product acting in conjunction and independently stopping the flea's reproduction cycle, and killing adult fleas. F2 has been formulated to last 28 days on proper dosage.

Good practice:
The Usage of Immune boosters is good practice when using flea products, to help strengthens their vital organs and combat resistance to flea allergies. It also prevents animals from developing yeast infestation.

During the prevalent flea season worming your animals regularly will aid in preventing fleas or internal pest from disrupting the workings of the spot on. Certain wormers have compounds that kill or stop ticks from latching on to animals, as well as stop any mite infestation. Consult your veterinarian for information.

F2 can be used in conjunction with other oral products to combat endo-parasites.