fruit fly trap caps

Glue cards: peel off the paper backing and slide the sticky card into the trap so the adhesive surface faces the catching area. Cartridge refills: pull the manufacturer’s tab to expose the adhesive or activate the cartridge, and remove/replace the cartridge when it becomes covered with insects. Dispose of the used card or cartridge and insert a fresh refill.

These refill cartridges and glue cards are made for electric plug-in indoor traps. Product listings note the refills fit plug-in devices, and the trap unit itself is sold separately.

Refills use a strong adhesive surface or glue card that holds insects in place. The glue is positioned so insects stick on the wall-facing or internal side of the card/cartridge, keeping them out of view while the trap remains in use until you remove the refill.

Place plug-in refills in outlets near likely fruit fly sources: kitchens, trash areas, near houseplants, by exterior doors, pet feeding areas, bathrooms, garages, and other spots with food or plants. Avoid placing them directly next to competing light sources such as windows.

Indoor fruit fly traps typically use either adhesive trap cartridges designed for plug-in electronic units or peel-and-insert glue cards that catch insects on an adhesive backing.

These refills target common household flying insects, including house flies, fruit flies, gnats (such as fungus gnats), and moths. Some reviewers also report catches of mosquitoes and non-biting midges.