This innovative wasp trap combines functional performance with visual cues to attract and trap wasps more effectively. Designed to fit standard PET beverage bottles, this 100% 3D printed system features a twist-to-close iris mechanism that traps wasps inside the bottle once they’ve entered — and lets you seal it for safe disposal or relocation.

Key features:

• Large 80 mm funnel top for improved visibility and scent diffusion
• Twist-to-close ring gear securely traps wasps once captured
• Iris blades simulate leaves, increasing natural appeal and providing additional landing zones
• Snap-together design – no screws, springs, or tools required
• Compatible with standard PET bottle threads
• Optional blade styles included: leaf-patterned or plain
• Fully 3D printable – optimized for PLA, PETG, or ASA

This version uses no chemicals and supports both dry or moist baiting, depending on your preference.

Color is Important

For optimal performance, print the funnel in bright yellow to attract wasps visually. The iris blades can be printed in green to simulate leaves, enhancing natural appeal and providing visual contrast. Use black or dark-colored filament for the ring gear and collar to hide mechanical parts and maintain a clean, focused appearance. This color combination not only improves trap visibility but also mimics natural wasp foraging cues, increasing overall effectiveness.

Bait Tips for Maximum Effectiveness:

For best results, use a protein-rich bait in early to mid-summer (June through July), when wasps are feeding their larvae. A small chunk of canned tuna, raw sausage, or wet cat food works well — moisten it slightly with water, and add a splash of vinegar to help deter bees. As the season shifts toward late summer and fall (August to September), wasps become more sugar-hungry. At that time, switch to a sweet bait like apple juice, fruit scraps, or soda (still with a drop of vinegar). Refresh bait every 2–3 days for best performance.

Suggested Bait Mix:

1 small chunk of raw meat, tuna or wet cat food for example (pea-sized or slightly larger) ½ tsp fish sauce or soy sauce ½ tsp water or apple juice (to help scent rise) ½–1 tsp vinegar (to deter bees)

What’s Included: Funnel with integrated threaded mount Twist ring gear Locking collar 4 iris blades (leaf-style) Optional plain blade variant

Best Practices for Wasp Trap Placement & Use

Use Clear Containers
 Wasps are drawn to light. Choose clear PET bottles or glass mason jars to increase entry and reduce escape behavior.

Place in Sun, Not Wind
 Position traps in warm, sunny areas near known wasp activity (like compost bins, fruit trees, or decks), but avoid windy spots — scent disperses better in still air.

Refresh Bait Every 2–3 Days
 Especially in hot weather. Protein baits spoil quickly and lose effectiveness.

Raise to Wasp Level
 Mount or hang the trap around table height or eye level for best interception — avoid placing it directly on the ground unless necessary.

Keep Away From Gathering Areas
 Place traps 10–15 feet away from patios or eating spaces to draw wasps away, not in.

Close When Full
 Twist the iris shut to safely trap wasps inside for disposal or relocation.

Related Links

The Mason Jar version of this Wasp Trap is available here… https://than.gs/m/1365791

The PET Bottle Splicing System is available here… https://than.gs/m/1365846

Visit my blog for more details and other designs: https://www.logicalplanet.com/

Revisions and Updates I occasionally update and revise my designs. When I do, I’ll document the changes here. Check back periodically for the latest revision notes or if you’re experiencing any issues with a model.