Long Acting KnockOut Flea & Tick Spray with Nylar (insect growth regulator) by Virbac kills fleas for 2 months and kills ticks (including Lyme Vectors) for 1 month. Nylar IGR sterilizes fleas for 3 months.Active ingredient:*Permethrin: CAS 52645-53-1……………..2.00%**Pyriproxyfen: CAS 95737-68-1 (Nylar**)….0.05%Other Ingredients………………………97.95%Total…………………………………100.00%
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