So my solution was to scald the substrate with boiling water and then after it cooled put my snake back. It killed all the ants. But they are back, and I get the idea they just like being in the cocoa fiber I am using becuase there is nothing else for them in there (last time I thought they were eating a urate). So the fiber is going to have to go. I am just wondering if aspen will give me the same problem (I doubt it), I am also considering Repti-bark. Anyother substrate ideas are welcome.