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Once you have scrubbed all the stained and dirty areas, allow the carpet to air dry completely. This step is essential; sufficient drying time prevents potential issues like mold, mildew, or a lingering damp smell. Depending on room ventilation and humidity levels, drying can take several hours. Once the carpet is thoroughly dry, use a vacuum cleaner to thoroughly vacuum the entire carpet. This final pass will remove all the dried baking soda, any remaining loosened dirt, and other residues, leaving your carpet deep-cleaned and refreshed.