3-Month Supply for < 5 lbs. and under. New! The Bio Spot Smart Shield Applicator. Keeps the liquid off your hands. Makes it easier to part your pet's fur. Gets liquid down to your pet's skin. Easy to load and apply! Starts Killing Fleas and Ticks within 15 minutes. Fresh clean scent. Water Resistant in humid and wet conditions. Contains lanolin to help condition coat. Formulated with an Insect Growth. Regulator (IGR) to break the flea-life cycle. Controls flea reinfestation for up to 2.5 months.