Wasps have their role in the ecosystem, but when their nest is too close to home they can be a danger to people and pets. Here is a simple and ecological way to make DIY wasp traps. We propose two alternatives that will also be good for summer mosquitoes! You just need to change the bait to attract wasps, mosquitoes or other animals.


  1. Take a plastic bottle and cut the neck
  2. Remove the bottle cap and turn the neck upside down and insert it into the bottle opening you have just cut.
  3. Join the 2 parts using packing tape or adhesive tape
  4. Smear the inside walls of the bottle with oil: this will prevent wasps from coming back up once they have entered.
  5. Insert the bait into the trap. The simplest method is sugar and water, alternatively it works with water and vinegar, beer, soda, even laundry detergent.
  6. To hang the trap in an area away from children and pets you can make a couple of holes where to pass a cord or wire. Keep in mind that you need to disassemble them often to pass out the bait and remove dead wasps.
  7. Empty the trap and replace the bait.


This ecological trap is effective and easy to build and is very versatile because with it you will be able to attract various types of pests: just change the bait.

What you need for the do-it-yourself insect trap

The materials that will be used are not ecological but in reusing them you give a hand to ecology anyway.

After the explanation for the do-it-yourself of this trap you will find a list of effective attractors of common use for a dose of 200ml. You need two plastic bottles, one with a cone-shaped top (green in photo) and a more rounded one (orange in photo). Use a utility knife, some iron wire or twine and scissors.

Instructions for the DIY trap

  1. Take the bottle with the cone-shaped upper part and draw with the marker pen two windows as in figure A and following the measurements in figure B cut them out, cutting them out first with the cutter and continuing with a scissors.
  2. Take the bottle with the round upper part (the orange one in the picture) and cut it at the height indicated, preferably at the maximum limit of the narrowest point, you can get an idea by looking at figure B.
  3. Retrieve the cap of the green bottle and pierce it in the center with the awl to pass the wire or hemp twine that will act as a hanger (figure C).
  4. After having cut out the two windows inserted upside down and without cork the round part of the orange bottle, by practicing a slight pressure the two parts block thanks to their conical shape. Screw the cap with the appropriate hook and your trap is ready to use. The fact of having simply stuck the two parts (green and orange) will make it easier to remove the drowned insects and to clean them.

Lepidoptera – Red wine, Lt. 1 + sugar (6 spoons), add 10/15 cloves + half a cinnamon stick. Leave in infusion 15 days. This solution should be diluted with water in a ratio of 1 to 3 (one Lt. wine, three Lt. water) considering a final use of 500 cl per trap (more effective solution especially for the capture of lepidoptera).

Flies and flies – fish or meat residues (some suggest putting water in them as well)

Mosquitoes – 200ml of water, 50g of raw sugar, 1g of yeast (The yeast fermenting slowly, will produce carbon dioxide, the same that through our breath guides the mosquitoes towards us.), a copper coin… the mosquitoes nest in the water, so be careful not to create a nursery, the copper should yield.

Where to set the traps

The do-it-yourself trap should be set near the area most invaded by insects.

Example if you are in the house place it outside the house, and away from the windows. So that you will stop the insects before they try to approach the house. traps should be placed away from children or pets, at the edge of the play area.

In the garden, place them on trees no less than 3-4 meters from you, at a height of 1 to 2.5 meters above the ground, and orient them south/southwest of the tree.

Alternatives on the market

On the market it is possible to find ready-made traps such as those proposed by Sandokan for wasps and bumblebees, which are attractive to insert inside, or the TAP-TRAP® caps which are very interesting because they are applied to common plastic bottles transforming them into biotraps for domestic or agricultural use.

Also very interesting are the recent traps with solar-powered ultraviolet light: insects will be attracted by the irresistible smell of sweetened water, beer or honey and at the same time by the UV light added during the night. Very convenient the 4 TRAPPOLE PACK available on amazon.

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