Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to detect mold in carpet [title] Smell your carpet to see if it has a musty odor. [step] Mold has a distinct, off-putting smell. If your carpet smells bad, it may be a sign that it has mold in it.

Ending1: [substeps] Keep in mind there are other reasons your carpet may smell bad. Look for other signs of mold before you take action. Ending2: Mold relies on smell alone to identify mold, but if your smell is a distinctive or musty smell, your carpet may be mold-causing. [substeps] Mold thrives on moisture, so you may need to install moisture-safe insulating materials and try to apply an odor deterrent to avoid spoilage. Ending3: If your carpet smells sour or smells rotten, it will be covered with mold. If the smell truly signals the mold is rapidly getting worse and the carpet has already been cleaned, you should talk to your carpet professional or consult on mold treatment. Ending4: Turning your carpet gently every so often will help you identify mold. [substeps] Mold leaves dark brown stains on the carpet.

Answer format: ending1/ending2/ending3/ending4