A solution of 3% Hydrogen Peroxide as purchased from the drugstore or
supermarket will work quite well. Use gloves, mask off carpet with paint
dropcloth. Exposure to skin, hair or other pigment will lead to bleaching.
Apply till bubbling stops. If bubbling stops, all active microbes are
oxidized. Don't get near eyes, other critical bodily orifices, etc. If you
have a fresh cut, or other unrecognized epidermal openings, the short term
results could be disquieting. That is be careful, use intrinsic sentient
mammalian sense. I use it to clean the fridge, water system plumbing, water
holding tank and instruments for exobiology that need to be cleansed of
various earthly contaminants.

Hope this helps,

Frank Grunthaner