Canyon's Law This bill prohibits the preparing, placing, installing, setting, deploying, or otherwise using an M-44 device on public land. An M-44 device is defined as a device designed to propel sodium cyanide when triggered by an animal, including any device that may be commonly known as an M-44 ejector device or an M-44 predator control device. No later than 30 days after the enactment of this bill, any federal, state, or county agency that has prepared, placed, installed, set, or deployed an M-44 device on public land must remove each such device from such land.