The Frabill Crawler Cabin is an easy soak-and-go solution to keeping worms cool and lively. Simply soak the unique fiberboard container in water until saturated then add bedding and worms. The water"s evaporation acts like a swamp cooler to keep bedding and bait cool all day. Empty the cabin, let dry, and you"re ready for the next trip. Be sure to transfer crawler to a Habitat system for storage between trips. Fiberboard constructed- Soak and go. Molded edges won"t rust. Double locking single door access.