AnswerA few non-chemical carpet cleaning solutions are to use club soda on red wine stains, cover greasy stains with corn starch and let stand, and apply 1/3 cup vinegar mixed with 2/3 cup of warm water to stains then blot with towel. To keep carpets clean you can put doormats at every exterior entrance, encourage family and guests to remove shoes at doors, and vacuum two or more times per week.