An exemplary system includes a feeder system configured to distribute a poisonous bait to voles and/or similar pests. One or more distribution tubes protect the bait from being absorbed, dissolved, or otherwise rendered ineffective, while continuously making the bait available to the pests. The distribution tubes also provide a tunnel-like environment such that the voles may feel comfortable enough to stay and eat. As the bait is eaten or otherwise distributed, a reserve descends to replace the previous bait. The exposed reserve tubing is attached to a removable cap, configured to allow indefinite refills of the bait until the pests are exterminated, without removal of the installed system. In some examples, the cap and reserve tubing may be decorated or camouflaged for esthetic purposes or to prevent tampering.