Activyl® Spot-On for Dog and Puppies is indicated for use once a month on dogs and puppies that weigh over 4 lb and are 8 weeks of age or older.
• Innovative active ingredient and mode of action.
• Effective flea protection demonstrated in fleas from multiple areas.
• Fast-acting. Starts killing fleas within 8 hours.
• Long lasting. Kills fleas for a full 4 weeks.
• Breaks the flea life cycle.
• Prevents reinfestation.
• Approved for use on puppies > 4 lb and 8 weeks of age and older.
• Waterproof, remains effective after shampooing and bathing.
• Remains effective after exposure to sunlight.
This product is made by Merck Animal Health.