What do you do with the spent grain (from your mash)??

[IslandLizard]

The difference for me is that I have a flour mill and after drying, I make spent grain flour with them [...]

That may make all the difference, depending on how finely those rice hulls get milled. Eating them when still whole, not a good experience.

 

[Spartan1979]

I tried mixing them into the garden soil and spreading them out over the lawn but it attracted ants. We have enough ants as it is so they go into the trash. We don't have enough space to try composting.