Some territorial birds vigorously defend their territory. These birds perceive their own reflection in a window to be another bird competing for their mate-and attack. Repeated attacks deplete a bird's energy, putting its health and nesting brood at risk. Stop Bird Attack eliminates the bird's window reflection, calms the bird, and stops the attack. The product is a removable, white coating that may be sprayed on any window under attack. Stop Bird Attack is effective for Northern Cardinals, American Robins, California Towhees, and other territorial birds. CONTENT: 9 ounce aerosol can