Kills the nest. Small roaches. Kills in hours. With foods roaches prefer. Kills non-stop for 6 months. How Combat Max Roach Killing Bait Works: 1. Roaches enter the bait station and eat the bait. 2. Roaches take bait back to the nest. 3. Roaches share the bait, killing other roaches and destroying the nest. Guaranteed to work or your money back! Call the Combat helpline at 1-800-426-6228 for information. Please recycle empty carton. Made in Korea.