Obviously, the coffee will not generate a flame, but a lot of smoke and it will be the latter that will keep the mosquitoes away.

In stagnant water

Mosquitoes breed in areas where there is stagnant water, such as the saucers of our plants.

Place coffee grounds in places where there is standing water to give mosquito larvae less chance to develop. Furthermore, mosquito eggs are attracted to the surface of the water and deprived of oxygen by the coffee grounds, so they will die.

On the plant soil

Sprinkle the coffee grounds on the surface of the plant soil. In addition to having a fertilizing action, it will protect the plants from ants and other insects.

The coffee grounds will also help keep mosquitoes away.