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You may have noticed a couple of days after cleaning carpet stains such as milk, the spots come back. This may be due to wicking. Wicking happens when the carpet becomes saturated and the liquid pools at the bottom. After a while, it starts to work it's way back up through the fibers making the stain reappear on your carpet. It is extremely difficult to remove all of the liquid from the carpet fibers, carpet backing and padding underneath, thereby creating ideal conditions for bacteria and mold growth (and thus malodors). However, you might not be ready to replace your carpet just yet, so here are a few things you can do to eliminate the carpet odor. When you first begin to remove carpet stains, blot up as much of the liquid as possible with an absorbent white cloth. Place another thick cloth on the carpet and weigh down with something heavy so all of the liquid is absorbed. When that's done, go ahead and sanitize the area. The newest technology uses peroxide and detergents to penetrate the soiled area and deactivate the odor. Simply spray a product such as Bio-OX Citrus Concentrate on the soiled area, which will penetrate into the carpet. Allow Bio-OX to penetrate for approximately five minutes. Using a clean white absorbent cloth, blot the area, pressing down firmly (do not rub) for 30 seconds. Repeat this blotting process until the area is dry. If the stain or odor persists, repeat the process. You can also use baking soda to eliminate surface (but not deeply penetrated) odors. Dampen the area with clean water and then sprinkle baking soda over it. Rub the baking soda into the soiled area and let dry; brush or vacuum to remove the dry material.