A rodent bait station for retention of sachet bait, which is a malleable bait retained within a porous bag or package having sidewardly protruding flaps. The bait station may be a molded plastic structure with a lid hinged to a base. Base walls define a bait compartment sized to receive the sachet bait such that the flaps overlie the opposed bait compartment base walls. The lid has downwardly protruding bait compartment walls which overlie the base bait compartment walls. Undulating or jagged teeth are formed on the lid and base bait compartment walls. When the lid is closed on the base, the teeth projecting from the lid cooperate with the teeth protruding from the base, thereby engaging and clamping a retained sachet bait package flaps to thus retain the package with the bait station even after a rodent has broken into the package to access the poison contained therein.