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Before proceeding with the deep clean, it's important to address any specific spots or stains. Select a carpet stain remover that is appropriate for your carpet type; examples shown include Simple Green Carpet, Vanish 3-in-1, and Krud Kutter Carpet Cleaner. First, always perform a colorfastness test in an inconspicuous area of your carpet (e.g., inside a closet or under a piece of furniture). Apply a small amount of the stain remover, let it sit for a few minutes, and then blot it with a clean white cloth or paper towel. If no color transfers from the carpet to the cloth, the product is safe to use. Then, apply the stain remover directly onto the visible stains as per the product's instructions. Gently blot the stain with a clean white cloth, working from the outside edge of the stain towards the center to avoid spreading it. Avoid scrubbing, as this can damage the carpet fibers or push the stain deeper into the carpet.