Amazing electronic bird repeller's warning chirps and trills drive away flocks of birds in an area up to 1 1/2 acres. It uses distress calls of birds to repel 8 different types of birds including woodpeckers and house sparrows. Great for large gardens, buildings, airports and much more. U.S.A. Common Usage: Bird repellant, Material Type: Waterproofed housing, Auto On/Off: Yes, Mounting Type: Wall, post, or side of building, Assembly Required: No, Includes: Automatic Day, Night and 24-Hour modes with light sensor