I have a couple of electronic dog & cat scarers........uummm, no, not really. All the dogs and cats around here are deaf! One even has a couple of flashing LEDS on the front meant to scare the animal. The cats think its a disco. Where they do work is if you suddenly point something at the animal, but then your finger will be just as effective for a brief moment. I wish you luck with that version but I have my doubts!