Eco Keeper Bed Bug Monitor and Glue Trap-12 Traps Great to use for monitoring and trapping Allows Early Detection for Bed Bugs! Stops New Bed Bugs from Reaching Your Bed! Fits posts/feet 4.3 diameter or less. More Detail at eco-keeper.com 100% Chemical-free & maintenance-free; No bed should be without it! Glue base attracts all stages of bed bugs, for easy identification.