Ebay has sellers selling large dog frontline plus flea control to be used on cats. They provide a small vial to store the frontline in and a syringe to administer the correct amount, 0.5ml for cats. The large dog frontline contains 4ml so you get 8 doses for cats. My question is, does the dog frontline plus contain the same ingredients as cat frontline plus and is it safe for my cats? Thanks!

Fipronilis a topical insecticide and is also known as Frontline, Frontline Top Spot, Frontline Plus. Frontline application kills adult fleas and larvae, ticks, and chewing lice. Fipronil comes in two forms, a liquid that is applied to the skin along the back of dogs and cats, or a spray. Fipronil works by affecting the parasite's nervous system causing paralysis and death. Frontline plus spreads over the body with the body oils in about 24 hours after application killing 100% of the fleas or ticks within 24-48 hours. Fleas and ticks are generally killed before they bite decreasing the risk of flea allergy dermatitis and tick-borne disease transmission.

Frontline plus for cats/dogs-It's very important to protect your pet from fleas and ticks, as both are carriers for worms and/or other disease and illness that can potentially cause fatal reactions. Additionally your pet maybe actually allergic to flea bites, which again can cause fatal reactions if not treated with a topical insecticide. Also it is a lot easier to control fleas and ticks from the beginning than it is to get rid of them in the end.

Fipronil collects in the oils of the skin and hair follicles and then is released over time (up to 1 month) from the hair follicles onto the skin and hair. Hair that is shed after treatment will help decrease larval stages of fleas as the medication is on the hair. Frontline stays on even with bathing, swimming, or exposure to sunlight. Area of application may appear wet or oily for 24 hours. Allow to dry before touching the area. Do not reapply for 30 days. Frontline Plus has been used off label to treat mites including ear mites and demodex. Frontline products are not soluble in water and have very little effect on the environment and wildlife.

Frontline plus comes in small, measured-dose applicators where the amount of liquid is matched to the weight of the animal. Once Frontline is applied, the insecticide quickly spreads over the skin providing protection from bites for at least a month. Fipronil application should be carefully done to the pet's skin not to the fur.

Fipronil, the active ingredient in all Frontline products, is not readily absorbed through skin so there is less chance of side effects compared to systemic flea control medications. It is required to re-apply Frontline plus only when fleas, "flea-dirt" or ticks are found. Frontline/fipronil products are available without a prescription from your local veterinarian clinic and online.

Benefits of Fronline Plus /Fipronil usage:

Proven protection- kills 100% of fleas and ticks on your dog or cat within 12 hours of application and prevents re-infestation.
Frontline plus effect is long lasting and continues to kill fleas and ticks all month long.
Frontline Plus/Fipronil has been approved for use on puppies and kittens 8 weeks of age and older and on breeding, pregnant or lactating cats and dogs
Frontline plus is waterproof: effective even after swimming, bathing and grooming
Frontline plus reviews show that it not only kills fleas and ticks on your dog or cat but also prevents re-infestation.

Frontline plus application is done placing the applicator tip through the dog's hair in between the shoulder blades and all the contents are placed in that one spot. Note that the product is flammable so keep away from heat/flame. Frontline plus may cause eye irritation so avoid contact with eyes.

I was told that frontline cats/dogs are the same product just different doses. My dog is a 0-22 lb dosage of frontline for dogs usually, would it really hurt him to use a cat dosage on him?

I know someone whos vet gave them cat frontline plus to be used on his 5 lb dog! Anybody know if this should or shouldnt be done?