Abstract: An inner container is loosely mounted in an outer container so that it will float on water that may collect in the outer container. A cover mounted on and spaced above the outer container sheds rain water and provides an access for snails and slugs over the upper edges of both containers to poisoned bait positioned in the bottom of the inner container. The outer container is partly buried below the ground and should the ground become flooded so that water runs through the pest entries, the upper lip of the inner container blocks the flow of water to the inner container which will then float upwardly within the outer container and thus keep the poison bait from becoming water soaked or flowing outwardly to the ground.