Ration boxes store sleet wheat, but have no checkbox for it.

Same issue, it can happen in both Ration Box and Refrigerator, there is no category for Sleet Wheat and duplicants fills up the refrigerators with tons of it , no chance to reassign to other box...

The only alternative to manage food is to set specific foods in the refrigerator so that no other undesired food or ingredient is added...

I put a storage compactor in a cold area with only sleet wheat - that seems to do the trick.  Also, I only checkbox the peppernuts on the fridge.