Aquamedic Pest Trap - Stop those nasty hitchikers before they wreck your reef! Great for catching, bristle worms, snails, crabs or mantis shrimp. Trap pest requires no monitoring, once a critter crawls in, it can't get back out. Bait the trap with some tasty seafood, leave it in the tank overnight, and wake up to find the culprit begging for your mercy...