Using comegen(termite) nest as a substrate for fructification?

Hi people, im in The Amazon jungle. I been doing a Lot of experiments for spreading Spawn.
Now i want to start producing mushrroms.

I made my first fruiting bag using sawdust, but it occurred to me to use termite( comegen)  mound material as a substrate instead of sawdust? What do you think?

In nature, when I put a piece of termite mound on mycelium, the mycelium colonizes the mound.

I started Making little experiments. It seems it's working, but some worms appeared in The wheat, but it seems it's working.

Any idea why ?

If You amplify The last picture You can see the worms.
It has worms but hte mycelium continúes to spread.