By Claire WhitakerMicrofiber is a synthetic material, usually made from polyester and nylon, that is engineered into extremely fine threads. According to the UCSF Western States PEHSU, the type used for cleaning is called split microfiber. When the fibers are split, they become about 200 times thinner than a single human hair. This structure gives the cloth a much larger surface area than a similarly sized cotton cloth and creates a positive charge that attracts negatively charged dirt and grease.
A fact sheet from UConn Health explains that the star-shaped fibers and increased surface area allow microfiber to absorb up to seven to eight times its weight in liquid. The scrubbing action mechanically boosts that absorption. The same source notes that the tiny fibers can penetrate surface contours like cracks that conventional cloths or paper towels cannot reach, and they pick up grease and oil better than traditional alternatives.
Microfiber Compared to Cotton
Research cited by UConn Health from the University of California, Davis Medical Center compared how much bacteria a cotton-loop mop and a microfiber mop removed from floors. The cotton-loop mop reduced bacteria by 30 percent, while the microfiber mop reduced bacteria by 99 percent. The UCSF toolkit adds that a microfiber mop head used with a detergent cleaner removed bacteria as effectively as a cotton mop head used with a disinfectant.
UCSF also points out that microfiber dries much faster than cotton, which makes it harder for bacteria to grow in the material. Microfiber mops are far lighter than water-soaked cotton mops, which the UConn Health document says can reduce the risk of worker injury through reduced weight and the elimination of wringing.
Using Microfiber Cloths and Mops
UConn Health lists several tasks where microfiber cloths and mops can be used: dusting, floor finishing, glass and stainless steel cleaning, removing biofilm, wet cleaning, and wet mopping. The UCSF toolkit describes cleaning counters and stovetops with the cloths, washing floors with flat-surfaced microfiber mops that have easy-to-remove heads, and cleaning windows using only a cloth and water: one cloth to wash and another to dry. UCSF notes that higher priced cloths usually have smaller fibers and pick up more dirt and dust, but that even inexpensive ones get good results.
Because the fibers are positively charged and highly absorbent, UCSF states that you can clean surfaces without chemicals. UConn Health says that changing mop pads after each room reduces the opportunity for spreading microbes, and that color-coded cloths and mops can be used to create a system for specific areas. The UCSF toolkit also recommends using color-coded cloths for different areas of a facility so germs are not transferred from one area to another.
Laundering and Care Rules
Both UConn Health and UCSF emphasize that microfiber must be washed separately from other laundry. UConn Health explains that microfiber can extract lint from cotton or other fabrics during the washing and drying process. UCSF adds that because microfiber carries a charge, it will attract dirt, hair and lint from other laundry, which reduces its effectiveness.
UConn Health recommends a mild laundry detergent. Both sources are clear on what to avoid: do not use fabric softener, dryer sheets, or bleach. UCSF explains that fabric softeners contain oils that clog up the microfibers, making them less effective. Bleach, according to UCSF, will shorten the lifespan of the microfiber. UConn Health states that bleach and fabric softener degrade the fabric.
For drying, UConn Health says microfiber can be line dried safely. If you use an automatic dryer, the setting should always be on low. UCSF notes that microfiber dries very fast, so you can plan on a short laundry cycle or simply hang items up to dry. UCSF also advises washing heavily soiled cloths and mop heads in warm or hot water with detergent, while lightly soiled cloths can be washed in cold water or on a gentle cycle. UConn Health also reminds readers to follow the manufacturer’s cleaning and maintenance instructions.
When to Replace Microfiber
UCSF states that microfiber is durable and reusable, lasting longer than cotton. It can be washed up to a thousand times before losing its effectiveness. UConn Health confirms that microfiber cloths and mops can be washed and reused. Neither source gives a fixed replacement schedule, but a cloth that no longer catches slightly on the surface of your hand, or one that pushes water instead of absorbing it, may no longer be split microfiber of good quality, according to the UCSF fact sheet.
Quick-Reference Care Table
| Topic | Guidance | Source |
|---|---|---|
| Washing load | Wash microfiber only with other microfiber; separate from cotton or other fabrics | UConn Health, UCSF |
| Detergent | Use a mild laundry detergent | UConn Health |
| Fabric softener or dryer sheets | Never use; oils clog fibers and reduce effectiveness | UConn Health, UCSF |
| Bleach | Never use; it degrades the fabric and shortens lifespan | UConn Health, UCSF |
| Drying | Line dry or use an automatic dryer on low heat only | UConn Health |
| Water temperature | Warm or hot for heavily soiled items; cold or gentle cycle for lightly soiled items | UCSF |
| Color coding | Use different colors for different areas to reduce cross-contamination | UConn Health, UCSF |
| Durability | Can be washed up to a thousand times before losing effectiveness | UCSF |
Frequently asked questions
Can I use microfiber cloths with just water?
Yes. The UCSF toolkit states that microfiber’s surface area and positive charge allow you to clean surfaces without chemicals. For windows, UCSF specifically describes using only a cloth and water: one to wash and another to dry. UConn Health lists glass and stainless steel cleaning among the tasks suitable for microfiber cloths.
Why should I avoid fabric softener when washing microfiber?
According to UCSF, fabric softeners contain oils that clog up the microfibers. This clogging makes the cloths less effective during your next use. UConn Health also states that fabric softener degrades the fabric and should never be used.
How do I know if a microfiber cloth is good quality?
The UCSF fact sheet offers two simple checks. First, a better-quality split microfiber cloth will catch slightly on the surface of your hand. Second, push a water spill with the cloth: if it pushes the water instead of absorbing it, the microfiber is probably not split. UConn Health notes that the preferred product is ultra-fine microfiber with a denier measurement of 0.13, where denier describes the fineness of a fiber.
For more on cleaning tools and how they compare, see our Cleaning Tools category page. You may also find our guides on dusters compared and mop pads and replacement heads useful when building a complete cleaning kit. If you are setting up a routine for different floor types, read about cleaning equipment for hardwood floors and cleaning equipment for tile floors. For general equipment care, visit our article on cleaning equipment storage and maintenance.
Sources
- UConn Health: A Green Cleaning Program for Connecticut Facilities
- UCSF Western States PEHSU: Green Cleaning Toolkit Fact Sheet, Microfiber
About Claire Whitaker
Claire Whitaker is part of our editorial team and reviews and edits our non-vacuum cleaning gear guides, checking product details against manufacturer specifications and owner feedback.
