Frontline Top Spot for Dogs 23-44 lbs, 3 Month (Blue) provides up to four weeks of protection against ticks and fleas. Fipronil collects in the oils of the skin and hair follicles, and continues to be released onto the skin and coat, resulting in long-lasting protection against fleas, ticks, lice, and sarcoptic mange.

• Contains active ingredient Fipronil to kill fleas, ticks, and lice
• Frontline Top Spot provides protection for up to one month
• Ends chewing lice infestations
• Manufacturer information and usage

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