In one aspect of the application, there is provided a moisture-resistant termite control device, comprising a bait container that includes a first chamber, an upper end portion defining an upper opening into the first chamber, a closure to selectively access and sealingly close the upper opening, a water resistant side wall, a lower end portion defining a bottom terminus of the bait container and a second chamber below the first chamber, a bait positioned in the first chamber of the bait container, the bait operable to be consumed or displaced by one or more species of termite, and a termite-edible or termite-displaceable water resistant polyurethane foam positioned in the second chamber to separate said bait from its environment and to reduce intrusion of water through the lower end portion when the bait container is installed in a selected orientation at least partially below ground.