How often do I apply it?

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The minimum treatment interval is 4 weeks.

Bathing or water immersion of dogs 48 hours after application will not stop FRONTLINE Spot On working effectively. Apply at 6 weekly intervals if the pet is shampooed weekly with a chlorhexidine-based shampoo and 5 weekly if emolient shampoos are used.

For handy ways of remembering to treat, click here.