Universal Fly Trap for Drink & Milk Bottles

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This is a simple yet effective 3D-printed fly trap designed to fit a wide range of drink bottles (water, soda, juice) and milk bottles (1L, 2L, and 3L). The design features a tapered insertion slope that adapts to various bottle neck sizes, creating a tight seal to prevent flies from escaping.

🧩 Two-Part Design
The trap consists of two parts that are easily assembled by pushing Part 1 into Part 2 as shown in the GIF. For drink bottles, a firm push is required to ensure a tight fit.

 

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🐜 Usage Instructions:

• Use fly bait (as shown in the final photo) and fill at least half the bottle with water.
• Place the trap outdoors only for best results.
• Once the bottle is filled with flies, it is recommended to dispose of the whole trap for hygiene purposes.

This fly trap is lightweight, quick to print, and ideal for dealing with fly problems in your backyard, garden, or camping trips.