PetLock® Yard For Fleas, Ticks and Mosquitoes – Yard Spray Concentrate treats up to 5,300 square feet by conveniently connecting to the garden hose for an easy-to-use spray. PetLock® Yard For Fleas, Ticks and Mosquitoes – Yard Spray Concentrate locks out insects for up to 4 weeks and controls over 50 common insect pests including fleas, ticks, and mosquitoes. PetLock Yard For Fleas, Ticks and Mosquitoes – Yard Spray Concentrate is used to protect your outdoor surfaces including lawns, trees, shrubs, roses and flowers, and outside surfaces of buildings.