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Question from Julie Mitchell

What is the difference between Frontline Plus and Frontline Topspot? Thank you!

Our Vet Says:

The difference between the two kinds of frontline is the active ingredients and consequently, the effect seen on the flea population.
Frontline Top Spot has as an active ingredient only fipronil which is an insecticide. So this product is effective only against adult fleas and does not break their life cycle and so new generations continue to hatch.
Frontline Plus has as active ingredients fipronil (same action as above) and S-methoprene. The second substance is an insect growth regulator and is effective against immature stages of fleas. It stops them from hatching so no new generation of fleas appear as long as your dog is protected with this product.
Please use the correct product depending on your pet’s body weight. Always read the information enclosed with the product and follow the manufacturers’ advice.


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Question of the Month

Congratulations to the winner of this month's Question of the Month, dalay f. who wins $100 for the following question:

Ask a Vet winner

I bought advantage 2 for my dogs. I have 4 and three of them weigh about the same. The smaller one weighs about 25 lbs. I need to know why the advantage is not working on them and also if you could recommend a flea and tick medicine that will work. They stay inside more than out. My girls are itching up a storm and I feel bad for them. Please help us. BTW Sable was a few months younger in the picture. Thanks, D. Ford ...?

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