One-piece design makes them easy to handle and fill with oil;HOW IT WORKS: Small slots top of the traps allow cockroaches to enter but keep bees out. Bees chase cockroaches through the cracks and into the oil compartment. Because the beetles are covered with oil, they die quickly and become trapped in oil. Easy to attach to frames, minimizing disturbance 'hive and still allowing all frames to fit in the box The traps thin slots for cockroaches entry and works by trapping cockroaches in the oil compartment and killing them quickly enough to trap small cockroaches in one of 6 hives Safe and natural way to eliminate small beetles' hive use of pesticides or chemicals. EASY TO USE: The clear plastic allows you to control oil levels and how many small cockroaches are caught in the trap. 1 piece design makes it easy to use, add and remove from the hive., Manufacturer: Foemey