We sell three types of rodent bait stations: Rat stations (in various sizes depending on where it’s to be installed), rat tube stations and mouse stations. The tube-shaped rat stations are for use underground – inside pipes, drains and sewers. Rodent bait stations are designed for use with rodenticide wax blocks and are installed outdoors only. There is a steel rod inside each station that the wax block easily slides onto. Each station comes with a key for easy opening and inspection.