I have an old house with very old wall to wall carpets. The carpt by the front door is just awful, and I have been trying to clean it for a while, with poor results. Recently, however, my kitten, who is not yet house broken, peed on a spot on the carpet, and it was immediately cleaned of all the old dirt (the pee needed cleaning up, of course)! Since I have no plan to make the kitten pee everywhere, does anyone know exactly what in the pee cleaned the carpet, and maybe how to duplicate the effect in a more sanitary way?

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    the one component that comes to mind is ammonia – ratchet freak Sep 22 '20 at 10:38
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    I think it is time to replace the carpeting in the house. – d.george Sep 22 '20 at 10:47
  • I don't disagree. Saving up for it. – Henry Stone Sep 22 '20 at 13:48
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    We have all been there, when peeing on the floor makes it look better. – DMoore Sep 22 '20 at 16:32

Urine (human and animal) contains ammonia, paricularly if it's left for a while, e.g. if you didn't notice it at first. Ammonia is used in carpet-cleaning products. In fact it's been used for stain-removal since Roman times.

You might want to track down an ammonia-based carpet cleaner, but use it when you can open all the windows and sit outside for a bit afterwards.

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