Eliminate gnats in plants by properly watering, using well-draining soil, applying natural remedies like neem oil or diatomaceous earth, and setting up vinegar traps (1 cup white vinegar with a few drops of dish soap).
First, ensure your plants are not overwatered and use well-draining soil to discourage moist conditions that gnats love. You can also use natural remedies such as neem oil or diatomaceous earth to combat gnats.