Pay special attention to cleaning its grease glands located where its tail would be (if guinea pigs had a visible tail), as well as its belly area
where traces of urine and faeces are usually found.
One product he recommends has an elongated spout - type applicator that gets right into the pile
of the carpet (or other nooks and crannies), bringing the chemical right
where it's needed, and can be used with a special black light that exposes all
traces of urine, for thorough cleanup.