The ingredients in Bio Spot Active Care™ Flea & Tick Spot On® for Dogs are spread through the oils in the dog’s coat, moving from hair to hair as the dog moves. Depending on the length and thickness of your dog’s hair, a greasy spot may appear on your dog’s coat. This is not harmful to your dog. We recommend brushing the area 24 hours after application. Ensure that you wash your hands with soap and warm water after grooming.
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