PestGuard Ultrasonic Bird Repeller

I had an issue with pigeons nesting in the rafters of an indoor sports stadium and leaving a mess each night. I set up the speaker on the ground over night, pointing up directly at the nest. For the first few nights, it worked very well and they left no mess. After about a week, the pigeons didn't seem too deterred by it, and continued to return and leave a mess.

It certainly keeping the the birds out of our carport because be they were try to nest and making a mess on the carport floor.. Very pleased.

It works a treat on the bird setting.