I have very small black flies ( black body white wings approx 3mil long ) living in my lawn, sod layed 2 years back. Have you any suggestions as to how I can get rid of them??.
Like most insects they are likely to occur in peaks as one or two generations arise in spring and summer. They will soon disappear and there is no control necessary, or possible really.
The lawn might be a bit wet and this might be a reason, also they like sheltered spots.