Bird repellent balloons

Birds, especially crows, can cause a lot of damage to (ripening) fruit in a short period of time. Every grower tries in his own way to avoid this (shooting, catching, placing a cannon).
These balloons have been specially developed for scaring away birds. As with almost all techniques, a kind of 'habituation' occurs over time. Alternating various techniques is therefore necessary to maintain the effect in the long term (moving, changing colors, placing cannon for a short time).

1 set consists of 3 balloons: white, yellow and black