Bottle cap — Hornet, Wasp, Fly, Insects Trap

Hornet, wasp, rhagoletis cerasi (cherry fruit fly), other pests insects  Trap 

This idea started, when I saw, that hornets attack bee houses, and after that this thing was developed.

Method: Place a sweet substance inside a bottle, such as sugar syrup or juice from canned pineapples. Screw an extension to the bottle's opening (it has a thead that perfectly fits regular PET bottles). 

This setup effectively attracts and traps wasps, hornets, rhagoletis cerasi (cherry fruit fly); while bees, other good insects, for some reason, show little interest and remain unaffected.

This final design was developed and tested on real conditions. In my case to protect beehouses. Results were shocking nice :-) The success formula is: big soft entrance (with fillets); right length, cone shape pipe; and the spoon (they were more confident on jumping). Without the spoon it’s much less efficient, "prey" might have scared and crawl out, fly away. 

Print suggestions:

• Consider adjusting layer time. When printing spoon part, it's crusial;

• Material – I used both PLA, PETG. PETG is more resistant to outside conditions;

• Layer height – 0.2mm;

• 2 walls;

• For best quality I used supports for entrance fillet. Not necessary;

• I printed those by 3 simultaneously and it worked nice. 

Interesting fact. Hornets don't do anything usefull. They are pests for everyone and everything, so don't feel sorry for them, protect yourself and others.

Yes, taking that photo was scary😁