I need advice...Quick!

"The name dog whistle is often used for both lung-powered whistles as well as electronic devices that emit ultrasonic sound via piezoelectric emitters. The electronic variety are sometimes coupled with bark detection circuits in an effort to curb barking behavior."

If that doesn't work, aim a dog whistle mp3, in a playback loop, at your neighbor's house all night long to keep the dog up; so, it'll sleep during the days!