3 monthly treatments. For use only on dogs and puppies 12 weeks and older weighing: 61 to 150 lbs. Kills fleas. Kills brown dog ticks. Kills flea eggs. Repels mosquitoes. Easy to use. Kills: fleas; brown dog ticks; deer ticks; flea eggs. Repels mosquitoes before they bite. Starts killing fleas within 15 minutes. For more information call our experts at 1-800-275-1414. Convenient easy to use applicator.