How It Works Scare-Eye Balloons are 3D visual deterrents that imitate the glaring eyes & gaping mouth of a predator bird. The reflective and bright-colored Mylar eyes and tails, along with the additional effect of the entire balloon moving with the wind, effectively intimidate unwanted pest birds off of your property. Pests Repelled Scare-Eye Balloons efficiently repel a number of common pest birds including pigeons, sparrows, starlings, swallows, crows, blackbirds, geese, seagulls, ducks, and woodpeckers. Where to Use Since Scare-Eye Balloons are a visual deterrent, they are only effective in areas where pest birds can see them. Scare-Eyes are recommended for use in open outdoor areas up 6,000 sq. ft. such as homes, gardens, porches, small farm fields, barns orchards, hangars, garages, parking lots, outdoor restaurants, and more. Installation To install Scare-Eyes, the first step is to inflate the balloons. By fastening a string to the inflated device, Scare-Eyes can be bound to surfaces for treatment. Includes one (1) white balloon.