Bed Bug ALERT monitors attract and detect bed bugs from beds, luggage, floors, offices or anywhere. Special chemical lure brings the bed bugs into the monitor and traps them faster and more effectively than other devices. The patented housing is tamper-proof and safe around children and pets. The monitor has a clear view window to check and see if bed bugs have been detected and trapped. Can be checked and reinserted easily where bed bugs are suspected. Sturdy plastic construction prevents the glue and the monitor from being crushed by heavy mattresses. Attracts both adult bed bugs and instar nymphs. Ideal to monitor multi-unit buildings. Designed for institutional use. 12 monitors per pack.