Nobody has trouble with cleanup of your rice cooker?

Oats get so foamy and gummy on the stovetop - and when rice is foamy (seems to be worst with short grain regular brown rice) it's a real PITA to clean my Zojirushi cooker.

I tried barley in the cooker once and it sent foam all over my kitchen counters, the inside and outside of the cooker top, it was ugly.

So I've been afraid to try anything but plain rice.