How to Clean Mesh and Knit Sneaker Insoles

Why Mesh and Knit Insoles Need Regular Cleaning

Mesh and knit insoles sit directly under your feet and absorb moisture and oils from your skin. Over time, this creates a damp environment where odor-causing bacteria can thrive. Regular cleaning removes the grime and helps keep your sneakers fresh.

If you ignore the insoles, the buildup can also stiffen the fabric and reduce the cushioning that supports your foot. A clean insole also feels more comfortable and prolongs the life of your sneakers. For more on the role of insoles, see how to clean sneakers.

Understanding Mesh and Knit Insoles

Mesh and knit are two common fabric constructions used in sneaker insoles and uppers. Mesh is a woven or open-construction fabric that is often used for breathability. Knit, such as engineered knit or flyknit, is produced by knitting fibers and offers a stretchy, sock-like fit. Both materials are lightweight and absorbent.

When cleaning mesh and knit insoles, the key difference from leather or foam insoles is their flexibility and water absorbency. They require gentle handling to avoid stretching or losing shape. Understanding the material helps you choose the right cleaning method. For more on upper materials, see shoe upper materials.

Before You Start: Check That the Insoles Are Removable

Many mesh and knit sneakers come with removable insoles. Look at the heel of the shoe; if you can lift the insole with a finger, it is removable. Removing the insoles lets you clean them thoroughly without getting the rest of the shoe wet.

If your insoles are glued in place, you can still clean them with a damp cloth and mild soap, but you must be careful not to oversaturate the shoe. See removable insoles for a deeper explanation of insole types.

Wash Them by Hand With Mild Soap

The best method for mesh and knit insoles is hand washing. Fill a basin with cool water and add a small amount of mild detergent, such as a gentle dish soap or a product designed for delicate fabrics. Dip a soft brush or cloth into the solution and scrub the insoles gently, working from the heel to the toe.

These steps will remove the built-up grime without damaging the fibers.

• Remove loose dirt with a dry brush before washing.
• Scrub both sides of the insole with the soapy solution.
• Rinse thoroughly under cool running water until no suds remain.
• Press out excess water with a clean towel. Do not wring or twist.

Air Dry, Never Use Heat

After washing, place the insoles in a well-ventilated area and let them dry at room temperature. Avoid radiators, clothes dryers, and direct sunlight, because high heat can shrink or distort the fabric.

Moisture left inside the insole can quickly cause odor and even mold. Make sure the insoles are completely dry before putting them back into your sneakers. For faster drying, see how to dry insoles quickly.

If you are in a hurry, you can use a fan to circulate air around the insoles. Do not use a hair dryer or place them on a hot surface. Patience is key to preserving the insole's structure and cushioning.

Tackling Persistent Odor

If your insoles still smell after washing, a simple home remedy can help. Sprinkle a thin layer of baking soda on the insoles and let them sit for a few hours, then brush it off. This is a gentle way to neutralize odor without harsh chemicals.

For deeper odor issues, consider replacing the insoles or rotating between two pairs of sneakers. Letting an insole fully dry between uses goes a long way. Learn more about how to deodorize sneakers.

Another approach is to use a disinfecting spray designed for footwear, but test it on a small area first to ensure it does not discolor the fabric. Always follow the product's instructions and allow the insoles to dry completely.

Common Mistakes to Avoid

Many people make the mistake of machine washing their insoles or using harsh chemicals. These can cause the fabric to pill, warp, or lose its cushioning. Bleach is particularly damaging because it weakens the fibers and can leave a yellow tint.

Another mistake is putting the insoles back into the shoes while they are still damp. This traps moisture and accelerates bacterial growth. Always wait until the insoles are completely dry to the touch, including the inside layers.

Finally, avoid using a dryer or a radiator to speed up drying. High heat can melt the glue that holds the insole together or shrink the fabric. Stick to air drying.

When to Replace Your Insoles

Even with regular cleaning, insoles wear out. If they become flattened, thinned, or start to crack, they no longer provide the support your feet need. You can use the insole compression test to check their condition.

If the cushioning is gone, it is time to invest in a new pair of sneakers. Our buying guides can help you find a model with a durable insole that matches your activity level, whether you are walking or running.

Worn insoles can also contribute to foot fatigue and discomfort. Replacing them or the sneakers themselves is a good investment for your foot health.

What to pick for your use

Questions

Can I put mesh insoles in the washing machine?

It is generally not recommended. Machine washing can agitate the fibers, cause the insole to lose shape, and may leave soap residue. Hand washing with mild soap is safer.

What is the best soap to use for cleaning insoles?

A mild dish soap or a delicate-fabric detergent works well. Avoid strong detergents with bleach or fabric softeners, which can damage the material.

How often should I clean my sneaker insoles?

It depends on how often you wear the sneakers. If you wear them daily, you may need to clean them more often. Pay attention to odor and visible grime.

Can I use bleach to remove stains from insoles?

No. Bleach is too harsh for mesh and knit fabrics and can weaken the material or discolor it. Stick to mild soap and gentle scrubbing.

How long does it take for insoles to dry?

Drying time varies. At room temperature in a dry, ventilated space, it can take a while. Make sure they are completely dry before putting them back.

What if my insoles are not removable?

If they are glued in, clean them in place with a damp cloth and mild soap. Avoid soaking the shoe. For deep cleaning, you may need to consider replacing the sneakers or visiting a professional.

Does baking soda actually remove odor from insoles?

Baking soda is a common home remedy that can help neutralize odors. It is not a permanent fix, but it can refresh insoles between washes.

When should I replace my insoles?

If the insole looks flat, has visible cracks, or no longer cushions your foot, it is time to replace it. You can also use the compression test described in our article.