design bird deterrent discs, more effective. Double-sided holographic reflective plastic discs, light deterrent, no harm to birds. Rotate 360 degrees to reflect light in all directions. Keep birds away from your house, garden, window, orchard, yard, etc. Protect your property. Easy to use. Hang it anywhere you need to repel birds. A Better Way To Protect Your Property Hundreds of birds are affected by this light-reflecting discs. Such as Pigeon, Hawk, Seagull, Sparrow, Woodpecker, Crow and Goose etc. Bird's eyes are very sensitive to light. The disc can reflect different color of dazzle light which confuse the bird's eye. The light keep birds away. To maximize effect, we suggest putting the discs in a place with breeze and direct sunlight. Colour:Multicolor Material:reflective material Size:380x76mm Package Contents: 24x reflective discs 32x connecting rings 8x hooks 8x rotating swivel rings