There has always been a debate: should you clean with water alone or add cleaning agents? Some cleaners use nothing but water to clean and rinse carpets, while others rely on the use of alkaline and acid pre-sprays and extraction rinses. Over the past 32 years, I have heard every argument—both pros and cons!
Recently, someone commented on why their company exclusively uses a professional-grade pre-spray and only water to rinse carpets, saying, “Why would you put soap on top of soap?” That is a valid perspective, even though it is an incorrect statement. Technology has significantly advanced the cleaning industry over the last 20 years. Modern rinsing and extraction agents now contain fiber conditioners, and anti-wicking properties that aid in both faster drying and cleaning. Nanotechnology has also become a crucial part of cleaning chemistry. Another common argument for using only water is: “We prefer a pure water rinse for a greener clean, leaving no chemical residue behind.” While this sounds ideal, it’s important to remember that water itself is a chemical—H₂O. Additionally, depending on the water source, hard water, calcium buildup, and well water may introduce minerals that remain on the carpet – soil!
Carpet cleaning is essential for maintaining a healthy environment and visually appealing home. But when choosing between water-only cleaning and chemical-based extraction rinses, which method is better? According to industry standards, a hot water extraction with a formulated extraction rinse is the most effective method for removing embedded soils and carpet cleaning pre-spray residues.
Let’s examine the scientific differences, along with the pros and cons of each approach, to help you make an informed decision. Here is a breakdown of the pros and cons of using only water versus a chemical rinse:
Pros of Water-Only Cleaning:
- Eco-Friendly – No harsh chemicals, reducing environmental impact and ensuring safer disposal.
- Non-toxic – Ideal for households with children, pets, or individuals with allergies.
- Gentle on Carpet Fibers – Minimizes chemical residue buildup that can attract dirt over time.
Cons of Water-Only Cleaning:
- May Not Remove Stubborn Soils or Stains – Without surfactants and water miscible solvents, soils, stains, grease, and oil-based spots can be extremely difficult to remove.
- May Not Leave Fibers Soft – Hard water can leave behind excessive minerals making fibers stiff. The proper use of formulated extraction rinses will leave the carpet soft and bright, and often have ingredients that will repel soils.
- May Require Higher Temperatures – Effective cleaning of embedded and oily soils often requires very hot water, which some carpets may not tolerate well.
When deciding between water-only cleaning and using a chemical rinse, it’s essential to weigh the benefits and limitations of each approach. While water-only cleaning is an eco-friendly, non-toxic option that can be gentler on carpet fibers, it may struggle with stubborn soils, longer drying times, and potential fiber stiffness. On the other hand, a well-formulated extraction rinse can help remove tough soils and pre-spray residue, speed up drying, and enhance softness, making it a practical choice for many professional cleaners.
Ultimately, the best approach depends on the type of carpet, level of soiling, and cleaning goals – and customer choice. By understanding the science behind each method, you can make an informed decision that balances effectiveness, safety, and long-term carpet care.
