Simple Gnat Trap With Your Grill




Catch gnats with the grill and a little cooking oil

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Step 1: Set Up Grill in Snakecoal Fassion

Lay out a circle of coals (in a snake formation) and light one end, the coals will ignite in order, keeping the grill warm longer.
I began with the electric starter and got impatient so went for the firebricks.

Also good for long cooks on the grill like smoking.

I laid mine around the coal baskets for support since I didnt have enough coals for a full circle.

Step 2: Add Lid and Oil

When the one end is lit.

Put the lid on and rub it with grease/ cooking oil.
Close the top valve and just open the lower one a smidge or adjust to your grill to keep it burning slow. I had to adjust my top valve about 20min in so the coals didn't die out.

The gnats will get attracted by the black colour and smell off the warm oil, touch down to investigate and voila gnat kebab.
And its apparently safe to eat, "I've heard"..
But would maybe just recommend it for fish food or fertilizer for your plants.

Works best on windless and rain less nights, but a word of caution from the Swedish fire department about leaving your grill unattended in warm dry weather!

The gnats on the lid is just from the after heat of yesterdays barbeque.
The picture in swedish press from the north of Sweden which I got the Idea from was covered in a thick layer.

search for "knottfälla grillen" To see pictures.
Also cred to the Rosenberg family for creating this ingenious, simple and effective gnat killer that's even ecofriendly.

Greetings from Sweden


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    6 Discussions


    25 days ago

    Hi. A doubt, using coal would be part of the trick (like generating CO2 or so)? Maybe an electric heater would do if not the case? Not questioning costs here.


    3 years ago

    Do you know what species of gnat they are? Are they a midge instead?

    4 replies

    Reply 3 years ago

    Hi Jobar. No clue we have 27-29(?) different blood sucking flying wonders of nature here in Sweden, midge was part of the google translation. but there smaller than mosquitos, bad photo/ camera, but if you zoom in on the black dot, to the right and one cm up there is one.


    Reply 3 years ago

    That's why I was asking. I should have asked this instead: Do you know if this works on all gnats/midges or just specific ones (biting vs non-biting)?

    To tell you the truth, you would probably need a microscope to determine the difference between species though, since they are so tiny.


    Reply 3 years ago

    Simuliidae is the Latin name for the biting Swedish gnat. As I understand its just the females that bite humans and the only ones that will be attracted to the grill, but nothing I can confirm.. There were other types of fly's on it as well that accidentally landed, but it was very attractive to the gnats.