Deep Clean Carpets With Baking Soda If you do not have a carpet shampooer, you are able to deodorize and deep thoroughly clean with baking soda. Immediately after vacuuming and place cleaning, "evenly sprinkle baking soda and let it sit for at least half an hour—longer if at all possible," suggests Dills.For Set-In Stains Dills recommends a mixtu