Answering the need for effective, low-odor fly and midge control, these CO2-trap powered devices are suited for different spaces and budgets. The top picks below are ideal for homeowners seeking discreet indoor use, multi-insect coverage, or outdoor mosquito and gnat control. Best for: indoor spaces with limited odor, outdoor patios, and yards with high insect activity.
| Product | Best For | Where It Excels | Limitations |
|---|---|---|---|
| Biogents Mosquitaire Outdoor Mosquito Trap | Backyards and patios | CO2 booster + sweetscent lure for broad mosquito targeting | Includes CO2 setup; filter/valves not included |
| DynaTrap DT152 Indoor Insect Trap | Indoor living areas | CO2 lure + UV light with silent operation | Requires replacement glue cards |
| DynaTrap DT160 1/4 Acre Trap | Outdoor spaces up to 1/4 acre | 3-way lure and whisper-quiet fan for broad insect control | Outdoor-only setup may require weather protection |
| OWLTRA OMT-L20 Indoor/Outdoor Trap | Versatile spaces | CO2 + UV light with weatherproof design | Bulbs replacement may be needed over time |
| VEYOFLY Indoor Fly & Gnat Trap | Indoor kitchens and living areas | Blue-violet light and adhesive capture | Adhesive cards must be replaced |
Biogents Mosquitaire Outdoor Mosquito Trap with CO₂ Booster

The Biogents Mosquitaire Outdoor Mosquito Trap includes a CO₂ booster, sweetscent lure, catch bags, and connectivity for extended mosquito control. It is designed to attract a broad range of mosquito species and other biting insects. The CO₂ component helps lure hosts, improving capture efficiency in larger outdoor spaces. Best for: yards or patios with persistent mosquito activity and a need for a pesticide-free solution. Caution: CO₂ setup requires a compatible supply and periodic maintenance to maintain performance.
DynaTrap DT152 Indoor Insect Trap

This indoor trap combines a UV-LED light with CO2 lures to attract flying insects, then uses a powerful fan to pull them inside where the StickyTech glue cards trap them. It is discreet, operates quietly, and blends with décor. Best for: indoor spaces like living rooms or kitchens where quiet operation matters. Caution: glue cards must be replaced when full for continued effectiveness.
DynaTrap DT160 1/4 Acre Mosquito Trap & Flying Insect Trap

DT160 is designed to protect outdoor areas up to 1/4 acre with a 3-way attraction system, combining UV light, diffuser, and TiO2 coating. The whisper-quiet fan draws insects into a catch basket. Best for: outdoor spaces needing robust protection against mosquitoes, gnats, and other flying insects. Limitation: outdoor units require weather protection and periodic cleaning of the basket.
OWLTRA OMT-L20 Indoor & Outdoor Trap

The OWLTRA OMT-L20 supports both indoor and outdoor use with a UV light, heat, and CO2-like attraction, plus a wide 360° intake design. It is weatherproof (IPX4) for all-season use. Best for: spaces requiring versatile placement and weather resilience. Caution: ensure bulbs and CO2-related components are replaced as needed to maintain performance.
VEYOFLY Indoor Gnat Trap With 2 Devices + 4 Refills

VEYOFLY uses blue-violet light to attract gnats, fruit flies, moths, and other flying insects, capturing them on adhesive cards. It is designed for indoor spaces without strong odors or sprays. Best for: kitchens and living areas needing a quiet, odor-free solution. Caution: adhesive cards require periodic replacement to maintain effectiveness.
Buying Guide: Key Considerations For Choosing A CO2 Trap
- Indoor vs. Outdoor Use: Choose traps designed for your space. Indoor models focus on quiet operation and odor-free attractants, while outdoor units often offer broader coverage and tougher construction.
- Attraction Mechanisms: CO2 boosters, UV light, and scent lures each appeal to different species. For midges, CO2-enhanced or multi-attraction systems tend to perform better in variable conditions.
- Ease of Maintenance: Consider how easy it is to replace glue cards, refill lures, or bulbs. Traps that require frequent maintenance may have higher long-term costs.
- Coverage Area: Match the device to your space. Smaller rooms may do well with indoor traps, while patios and yards may need larger outdoor units with higher reach.
- Safety and Odor: If odor is a concern, prefer glue-card or low-odor attractant designs over sprays or zappers.
- Weather Resistance: Outdoor models should be weatherproof and able to withstand sun, rain, and wind.
FAQ
- Do CO2 traps work for midges? Yes, many CO2-based traps attract a broad range of flying insects, including midges, by simulating breath and body heat cues.
- Are UV traps safe for homes? Most UV traps are designed for indoor use and generally safe when used as directed; avoid direct skin exposure to UV light.
- How often should I replace glue cards? Replace when full or according to the product’s guidelines to maintain effectiveness.
- Can these traps replace pesticides? They offer a non-chemical control option, but for high-infestation areas, integrated approaches may be needed.
- Which is best for a patio? Outdoor models like the DT160 or Biogents Mosquitaire are strong choices for larger outdoor areas.
- Do I need a CO2 bottle? Some models include CO2 components; others use alternative attractants. Check the kit contents and setup requirements.