Chemicals used in a food establishment must be:
A. Used only by the person-in-charge
B. Stored on the top shelf, out of the fridge
C. Stored away from preparation areas
D. You still need during non-business hours

the answer would be C.

Explanation:

if the chemical was so spill or have excess chemical on the container it could contaminate the food or tools.

when you rub, you also apply pressure, that pressure can urge the poop to come out. i think that when your rubbing, you also might be slightly breaking it up and that can further fill the stomach.