Q.smothering out mint
Is it possible to smother out mint in a large area by sodding over the entire area with St. Augustine grass? I am trying to get rid of mint in an area of about 400 S.F. I have used my weed eater to cut it at the ground. Can I now sod over the entire area with St Augustine grass and smother out the roots of the mint? I have pulled a lot of the root runners up but it seems impossible to pull them all. Any suggestions other than Roundup?

Mint is highly invasive and can be very difficult to remove from your garden.
Here is an article that may have a few other ways to control or kill the invasive mint.
https://www.gardeningknowhow.com/edible/herbs/mint/invasive-mint-how-to-kill-mint-plants.htm