3 monthly treatments. For use only on dogs and puppies 12 weeks and older weighing 5 to 14 lbs. Kills fleas; brown dog ticks; deer ticks; flea eggs for 30 days. Prevents re-infestation. Breaks the flea life cycle. Fast acting. For more information call our experts at 1-800-275-1414 (weekdays, 9 am-5 pm EST).