Answer:
You can tumble in it, roll in it, burn it, animal eat it. Used to cover floors, still used beyond stall doors. Freshens whatever it is placed on. Absorbs whatever is poured into it.
What is never used unless it's in a tight place?
In the night a mountain, in the morning a meadow.
Always old, sometimes new. Never sad, sometimes blue. Never empty, sometimes full. Never pushes, always pulls.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?
I have two eyes in the front and a lot of eyes on my tail