There are a few things you can use for Fungus Knats. Some use a mix of Hydrogen Peroxide and water to pour through soil.
Can use BTK Bacillus Thuringiensis bacteria to get rid of the larvae.
Supposedly the knats cannot live in dry environments.
Rick
"Many times a day I realize how much my own outer and inner life is built upon the labors of my fellow men, both living and dead, and how earnestly I must exert myself in order to give in return as much as I received"