Scientists have developed a new type of nano-coating material that can cause any liquid to bounce off the surface of an object. For example, oils, wines, organic alkalis and solvents with low surface tension can be spilled on clothing made from this material. , It will be rebounded immediately and will not stain the clothes. Therefore, some business people predict that if this material is used in large quantities to produce clothing, the sales of detergents will drop significantly. Which of the following, if true, cannot challenge the business person's prediction? ['Consumers often use detergents because they have a disinfecting effect.', 'This coating material will affect the wearing comfort of the garment and thus affect the sales of the garment.', 'It will take quite some time for the research results to be commercialized.', 'People are used to washing clothes according to the time they are worn, whether or not the clothes have been soiled.']