Spray This mixture on any surface that you'd like to repel pigeons from. Reapply the combination each three to four times or until the smell fades away. This tends to keep the pigeons away. One is usually a poison termed avitrol. It would make pigeons sick. Some pigeons will die. https://jared6bhqx.blogstival.com/53660977/the-5-second-trick-for-installing-a-pigeon-repellent-in-arar