Best CO2 Traps for Midges and Similar Flying Insects for 2025

Midges and other small flying pests can be persistent indoors and near outdoor spaces. This guide highlights CO2-based and allied traps designed to attract and capture gnats, fruit flies, and similar insects. Each option below uses a combination of CO2 or CO2-like attractants, UV or blue light, and suction or adhesive mechanisms to reduce flying insect activity without harsh chemicals. The selections emphasize effectiveness, ease of use, and suitability for American homes and backyards.

Summary of Selected Products

Product Brand Key Attractant/Mechanism Indoor/Outdoor Typical Use
DynaTrap DT152 Indoor Insect Trap DynaTrap CO2 lure + UV-LED light Indoor Flying insect capture with quiet operation
SAFETY FIRST Indoor Insect Trap (SAHETO) SAHETO CO2 attractant + UV light + glue boards Indoor Multi-insect trap with safe, non-chemical design
OWLTRA OMT-L20 Indoor & Outdoor Electric Trap OWLTRA UV light + CO2-like attraction + suction Indoor & Outdoor Versatile, weather-ready trapping
ZEVO Flying Insect Trap & Refill Cartridges ZEVO Blue and UV light + adhesive cartridge Indoor Mess-free disposal with disposable cartridges
Biogents Mosquitaire Outdoor Mosquito Trap Biogents CO2 booster + Sweetscent lure Outdoor High-efficiency outdoor mosquito control

DynaTrap DT152 Indoor Insect Trap

DynaTrap DT152 Indoor Insect Trap

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The DynaTrap DT152 indoor insect trap combines a discreet design with robust trapping power. Its sleek black finish and decorative basket help it blend into home environments, while a whisper-quiet fan operates in the background. The device uses UV-LED light to attract flying insects and a CO2 lure to increase capture rates. Once insects are drawn in, the StickyTech glue cards trap and kill them. Replacement StickyTech cards are available, ensuring ongoing effectiveness in small spaces with minimal maintenance.

Goodnature CO2 Canister (For A24 Traps)

Goodnature CO2 Canister

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Goodnature’s CO2 canisters provide power for A24 traps, enabling strong pest-striking action. These recyclable alloy steel canisters are designed for single use and last for several months when paired with compatible traps. They deliver a reliable source of CO2 to attract rodents and other pests that respond to CO2 cues, and they fit all A24 traps, maintaining trap integrity and effectiveness without additional risk or overuse of chemicals.

Indoor Insect Trap by SAHETO

SAHETO Indoor Insect Trap

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The SAHETO Indoor Insect Trap emphasizes a quadruple-action approach: bait, UV light, a whisper-quiet fan, and an ultra-adhesive glue board. It emits wavelengths that attract fruit flies, gnats, mosquitoes, and similar small flying insects. The design is quiet and unobtrusive, suitable for kitchens, offices, and living areas. Importantly, it is built with user-friendly materials and claims to be safe for households with children and pets when used as directed. The included glue boards support continuous operation without frequent maintenance.

ZEVO Flying Insect Trap & Refill Cartridges

ZEVO Flying Insect Trap

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ZEVO’s flying insect trap uses blue and UV light to continuously attract house flies, fruit flies, and gnats. The trap relies on an adhesive backing instead of chemical sprays, providing a mess-free disposal method. To use, insert a disposable cartridge, plug in the device, and replace the cartridge when full. Its wall-facing design helps minimize visibility while catching insects, making it suitable for bedrooms, kitchens, and small office spaces where midges and similar pests are a concern.

Biogents Mosquitaire Outdoor Mosquito Trap

Biogents Mosquitaire Outdoor Mosquito Trap

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The Biogents Mosquitaire is designed for outdoor use and emphasizes a robust CO2-based attraction system complemented by the Sweetscent lure. It comes with a complete setup including a CO2 emitter (tank not included), two catch bags, a funnel net, a 12V power supply, and an extension cord. This trap is engineered for high-efficiency capture of a broad range of mosquito species, with an emphasis on minimizing human bite risk in yards and patios. It is presented as an eco-friendly, pesticide-free option for outdoor pest management.

Buying Guide: Key Purchase Considerations For CO2 Traps And Alternatives

  • Target pests and environment: Indoor traps fit kitchens, living rooms, and offices, while outdoor traps excel in yards and patios. Consider whether you need CO2-based attraction, UV/blue light, or adhesive-based capture.
  • Power source and placement: Many models require plug-in power, while others rely on replaceable CO2 canisters. Place traps away from high-traffic areas to avoid nuisance, but near common insect paths for better attraction.
  • Maintenance and refills: Some devices use glue boards or disposable cartridges. Check replacement availability, cost, and ease of changing components.
  • Safety and pets/children: Opt for devices with non-chemical lures where possible. Verify that any CO2 components are safe for household use and placed according to manufacturer guidelines.
  • Weather tolerance: Outdoor models should be weather-rated (water resistance and durability). Indoor devices typically emphasize quiet operation and aesthetics.
  • Effectiveness and coverage: Look for traps designed to capture a broad spectrum of small flying insects, especially gnats and fruit flies. Consider models with higher trapping power or dual attractants (light plus lure).
  • Noise and odor: Most select devices operate quietly and without noticeable odors. If a product uses CO2, ensure the perceived odor is minimal and within safety guidelines for indoor use.
  • Energy efficiency: Compare energy usage, particularly for longer-term use. LED-based attractants tend to be more energy-efficient than incandescent options.

When selecting a CO2-focused trap strategy, consider combining a high-attraction device (CO2 and UV/blue light) with a reliable disposal mechanism (glue boards or disposable cartridges) for continuous, low-maintenance control of midges, gnats, fruit flies, and similar pests. The options above provide a range of indoor and outdoor applications to fit different spaces and pest pressures.