Yes, some carpet stains can be permanent. Stains that have been sitting for a long time (weeks, months, or years) are much harder to remove because they have had time to dry and set. Other types that may be permanent include oil-based stains and dye stains. While some cleaners can help, they can also risk dyeing or permanently changing the carpet's color. If you have an old stain and are unsure of the cause, it's best to call a carpet cleaning professional. If DIY methods and professional cleaning fail, you may need to replace that section of carpet or learn to live with the stain.

Ozone smoke removal uses an ozone generator to eliminate stubborn odors from sources like house fires, wildfires, or cigarette smoke. Ozone (O3) is a highly reactive, unstable gas that neutralizes odors by oxidizing the organic compounds it comes into contact with. During this oxidation process, ozone "donates" its extra oxygen molecule to the smoke particles, effectively eliminating their smell, with oxygen being the primary byproduct. While ozone can be effective for removing smoke smells from building materials and belongings like wood furniture, this treatment is best left to a professional, as improper use of an ozone generator can be dangerous to your health.

Part of the rug cleaning cost depends on the rug material type. Different materials may require different cleaning methods. Some of the most common rug material cleaning costs include:

• Wool: $5–$8 per square foot

• Cotton: $2–$8 per square foot

• Silk: $4–$8 per square foot

• Synthetic: $1–$4 per square foot

• Sheepskin: $4–$8 per square foot

• Sisal: $4–$7 per square foot

• Other materials: $1–$8 per square foot

If you’re renting a steam cleaner, the right cleaning products to use on carpet are cleaning solutions designed specifically for steam cleaners and carpeting. Always follow the manufacturer’s guidelines to ensure you’re using the appropriate product. For everyday cleaning and deodorizing, white vinegar and baking soda are two natural but effective products to use; for urine and other biological messes, opt for an enzymatic cleaner. Avoid harsh cleaners like bleach or dish soap, which can damage carpet fibers or leave behind stubborn residue.