Biodegradable, environmentally-friendly and not harmful to humans or animals. Keeps deer & other garden guests from browsing on plants, flowers, hedges, bulbs and small trees year around. Safe all-natural deer repellent that is EPA and State DEP registered. Helps keep Lyme disease carrying deer off your property. One application lasts 3 months. Economical 32 oz. concentrate yields 8 qts. of ready-to-use spray that covers approximately 4000 sq. feet. Will also keep tree squirrels from invading your bird feeders! Spray bird feeder & seed without interrupting wild birds feeding habits. Deer Off also saves your bulbs from underground burrowers. Dip bulbs in concentrate for approximately 5-10 minutes, allow to air dry then plant.