The genius trick to eliminate gnats from the kitchen: they won’t come back

Lemon
To keep gnats away, place half a lemon studded with cloves in each pot. You can also use an orange! Also, if you have a liquid soap with a lemon scent available, use it because gnats hate this scent!
Cloves
To repel gnats, you can spray lemongrass essential oil mixed with cloves on the plants.
Store food
Gnats particularly like leftover food and spoiled fruits and vegetables.
Tip: in the summer, store all your food in your cupboards, fridge or in airtight containers. Above all, be careful not to leave food lying around.

Clean the trash can
To prevent food odors from attracting midges, clean your trash cans regularly.
Tip: use a mixture of baking soda or black soap as a cleaner.