When the bird repellent colloid mixture and the bird repellent colloid suspension are used, they are diluted with water, and the droplets adhere to the surface of the sprayed substance, which can slowly and permanently release several characteristic fragrance gases. When birds smell it, it will affect the trigeminal nervous system of birds and cause allergic reactions. When birds peck at sprayed substances (fruits, millet, etc.). ), it will cause physiological changes in the digestive system of birds, causing them to have anorexia reactions, both of which are unacceptable and disgusting to birds, thus making birds fly away from places where they feed, play and nest, and never come back during their memory period, effectively expelling them without hurting them.
Other methods:
Acoustic bird repeller records firecrackers, eagles' calls, knocks, etc. Take a tape recorder and turn up the volume from time to time to drive away the scattered birds in the garden at any time.
Placing bird repellent in the garden, placing dummy, fake eagle or hanging balloon with eagle, cat and other graphics over the orchard can prevent the invasion of harmful birds in a short time.
Smoke can effectively prevent and disperse harmful birds by spraying smoke on the edge of orchard or garden.
Reflective film drives away birds. Cover the orchard floor with reflective film. Reflected light can prevent harmful birds from approaching fruit trees, which is beneficial to fruit coloring.