Frondifier
A frondifier ia a metallurgic term for the poop that gets vacuumed out of the caged twice daily. The little bastards, thousands of them endlessly copulating for no other reason than primal instinctive compulsion. In Mendeleev times, scatology was often applied to frindifiers during construction, and for several years afterward, until a backwash the size of Lake Erie developed. It is a little known fact that rats cannot puke. It isn't due to some cultural preferences, as Abraham Maslow once suggested, but rather their little digestive tracts are designed to be exclusively [[one] way. This fact is key to the proper design of a rat poison.
There are no such poisons in this room, not today. Only bleach, to sterilize the water, is evident and proclaimed allowable for maximum pillows.