Mudder Bird Repellent Scare Discs, Effective Bird Repeller to Keep Birds away Product Details Product Dimensions: 3 x 3 x 0.1 inches Item Weight: 8 ounces Shipping Weight: 8 ounces Manufacturer: Mudder Bird repellent discs/ bird scare discs, double mirror works by reflecting light off its surface to keep birds away - harmless, effective and decorative Easy to install, simple and effective permanent solution to getting rid of bird problems Protect your home siding, gardens, trees, boats and more: Hanging in your house or in your garden and makes them in good decoration Keep your garden, patio and other area chemical-free, keep birds like pigeons, woodpeckers, blackbirds, seagulls, ducks, herons, crows and ravens away Package Includes: a pack of 16 discs, 8 hooks and 24 rings to attach the discs together Bird Repellent patio Discs: Eco-friendly, Simply Ingenious! Mudder Bird Repellent Discs will keep most common household birds awayincluding pigeons, woodpeckers, blackbirds, seagulls, ducks, herons, crows andravens. The repellent discs are a simple and effective permanent solution to get ridof bird problems. The product works by reflecting light off its surface tokeep birds away. Easy to install - Install the discs over crops or over the problem area tomake sure that the discs are in direct sunlight, so they cause the reflectionto keep birds away . feature: - Uses light reflection to keep away birds. - Comes in a pack of 16 discs, with 8 hooks and 24 rings to attach the discs together. - The discs are packaged in a blister pack and covered with a protective film to protect them during transport. - Discs are a diameter of 7.5cm and reflective on both sides. - Simple to install, just hang it over an area with enough light. The extra long hook holds well even in wind. - The product is not a toy and contains small parts, it should keep out of children's reach.