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How to clean carpet naturally
Use plain hot water in a steam cleaner.
Many carpet cleaning machines say that you should use their highly concentrated cleaner when steam cleaning your carpets. However, using plain water in these machines will get a large amount of dirt and grime out of the carpet, and it won't leave any residue or chemicals behind.
This method will not work on hard to clean stains. However, it is a good way to give your carpet a general, all over cleaning.