1. Quantity: a set of 6 windmills and accessories (including plastic poles) can be replaced as desired. Even in light wind, the wind spiral rotates and the sunlight reflects in the sticks. Thanks to this simple combination that is safe for the animals,you can effectively drive away the birds. (Reusable) 2. Non-toxicity and safety: There are no chemical and technical ingredients that naturally resist pests when used. It can be inserted directly into the soft ground or connected to a branch or railing. Even if exposed to sunlight or rain, its reflectionperformance can be maintained for many years. 3. Wide use: even in sunlight or rain, the reflection performance can be maintained for many years. Protect plants from birds, protect gardens, trees, plants and vegetables.Scope of application: farmland, orchard, garden, lawn, vegetable garden and airportetc. 4. Easy installation: these wind turbines are easy to install on the ground and can decorate any garden and at the same time repel pests. Easily remove unwanted birds from houses, yards, balconies, fruit trees, cars and electrical appliances. 5. Customer service is our top priority.