Mason Fly Trap

3d printed fly trap with bait recipe

Mason Fly Trap by Kage
https://thediyjunky.com/@kage/mason-fly-trap
Licence: CC-BY-SA-4.0


Mason Fly Trap

Summary

A fly trap for catching fruit flies, gnats, and other pesky flying insects attracted to sweet and sour scents.

Parts

Part Size / spec Qty Unit cost
glass mason jar wide mouth pint 1 pint $3.50
PETG Filament 1.75mm 4 g $0.40

Required total: $5.10

Tools

Trap Bait

Build steps

1. Print Part

Download the model, import it into your favorite application, and print it with your 3D printer using PETG Filament

2. Mix bait solution

Follow the bug-bait recipe. Add the dish soap when you set the trap. For that added kick, add a tsp of beer or red wine to the bait before you add the soap. If you mix a batch recipe, do not add beer or dish soap to the vinegar and sugar mixture; it will sour. Vinegar and sugar mixture should keep in a sealed jar for several months.

3. Assembly

Put the bait in the jar, insert the trap funnel, and secure it with the threaded lid ring.

4. Clean trap and re-bait

Clean the trap of dead bugs and bait solution every 4-5 days. Wash thoroughly with soap and water. Dry and add more bait solution. Leave the trap in traffic areas such as near the kitchen trash can.