I poke a hole in the center of the ant bed and pour boiling water in the hole.
bleach most certainly works, but be aware that it will kill the grass.
Stamp down, like a hole in center spray ant killer.
I put bleach on them
Dry grits. It really works!
this video is sharing some good tips: https://www.youtube.com/watch?v=P2skSz66yiU
But in my garden I had to completely dig up all of it until I reached the royal chamber. In general when this is moved it should be ok for a while