What's with cats and buckwheat?

Tiki at the top of my closet

...sitting on my bag of buckwheat,
which she would later spill all over my closet and floor

If they're not peeing on it, they're spilling it all over my closet and floor. I had an extra bag of buckwheat from my pillow (they come too full, so you're supposed to empty some out to fit you) and she decided to play with it today and rip a hole in it. If you see brown stuff on me, feel free to flick the buckwheat off me. I know that I'm going to be finding this stuff everywhere for a couple weeks.