A. Oral products, such as NexGard, are similarly effective against fleas and ticks in comparison to topically applied products. However, keep in mind that NexGard has only been proven safe in dogs, not in cats. The active ingredient in NexGard is afoxolaner, which kills fleas by over-stimulating their nervous system.
Many pet owners prefer this product because they do not have to worry about administer a liquid product on their pet’s fur.
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