How to Raise Golden Grubs

Drill multiple small holes into the lid of a shallow, clear plastic sweater box. Any condensation that occurs under the lid after the grubs are placed in the box is an indication that more holes need to be drilled.

Cut out a piece from the middle of the lid. Secure a piece of fine-mesh window screen over this hole, on the underside of the lid, with a hot glue gun. This screen will provide ventilation to stop mold growth.

Pour 2 to 3 inches of a prepared mealworm bedding/feed mixture into the plastic box. Add shreds of cloth and/or old paper to the bedding to prevent the bedding from becoming caked. Spread the bedding evenly across the floor of the box with your hand.

Place a moist sponge in an open plastic sandwich bag. Place the bag on the grub bedding/food, leaning it against the side of the plastic box, for interior moisture. Position the bag so that the open top is facing up. Alternatively, you can fasten a moist sponge to the underside of the container lid with wire.

Place your golden grubs in the plastic sweater box.

Cut 1-inch chunks of fruits and vegetables, and stick toothpicks through them. Place the chunks on top of the bedding with the cut side facing up to prevent juices from over-moistening the bedding. Remove the fruit and vegetable chunks when they become moldy by grasping the toothpick and lifting the chunks out. Add crusts of bread and dollops of moist cat food to the feed as well.

Filter out grub waste once a month by temporarily removing the grubs, putting them in a separate container and sifting the bedding in a fine-mesh sifter outside. Wash and thoroughly dry the sweater box before returning the sifted bedding and grubs to the box.