How to Care for ESD Shoes So They Keep Their Rating

Why Cleaning Affects the ESD Rating

Electrostatic discharge shoes are part of a complete grounding system: they carry a static charge from your body to a dissipative or grounded floor. That path only works when the sole and the internal conductive elements stay clean and continuous. A layer of oil, wax, polish, or even packed-in dust can act as an insulator and interrupt the connection. This is why the care routine is not just about looks: it is about keeping a safety-rated product fit for its purpose.

The American Podiatric Medical Association describes the feet as the foundation for a healthy and happy life, and OrthoInfo, the patient education resource of the American Academy of Orthopaedic Surgeons, publishes musculoskeletal information developed and reviewed by experts. NIOSH, the National Institute for Occupational Safety and Health, describes itself as a research agency focused on the study of worker safety and health. For ESD footwear, foot health and workplace safety meet in one place: the clean contact between sole and floor.

Build a Daily Care Routine

Make a short care check part of the end of each shift. Wipe the upper with a damp lint-free cloth to remove dust and process debris. Then turn the shoe over and check the areas that touch the floor: the heel, the toe contact patch, and the tread. Grease, adhesive, paint, hair, or metal filings can pack into the pattern and sit between the outsole and the dissipative floor.

• Keep a dedicated cloth and soft brush at your workstation or in your locker.
• Wipe the top surface of the insole if it is removable, so the conductive contact with your sock stays clear.
• Inspect the outsole as you clean, looking for embedded material in the tread.
• Do not put tape, stickers, or labels on the sole.
• Follow any cleaning schedule your ESD program gives you.

Cleaning the Upper Without Blocking the Path

The upper does not carry the charge the way the sole does, but residues from the upper can run down onto the sole contact area. Clean leather with a mild soap and water solution, rinse the cloth, and let the shoe dry at room temperature. For suede and nubuck, use the gentler methods in suede and nubuck care.

Conditioners and waxes are the main risk because they are made to sit on the surface. If the manufacturer's own care instructions allow conditioner on the upper, apply it sparingly and keep it well away from the sole. For general care steps, see leather shoe care guide.

Clean the Sole as the Critical Surface

The outsole is the part of the shoe that touches the floor, so it deserves the most careful cleaning. Use a stiff but non-abrasive brush to clear tread grooves, then wipe the contact patch with a damp cloth. Avoid solvents and degreasers unless the manufacturer identifies them as safe for the specific sole material; harsh chemicals can soften or swell the rubber and change how the shoe sits on the floor.

Do not apply shoe polish, sole dressing, wax, or waterproofing spray to the outsole. These products leave a film that can interrupt the conductive path. If you need water protection for a wet work area, choose a shoe with a waterproof build and treat only the upper, then dry the shoe properly after exposure as described in drying wet shoes properly.

Drying and Storing ESD Shoes

Damp shoes are both an electrical and a slip risk. Air dry them slowly at room temperature, never on a radiator, in front of a heater, or in direct sunlight. Heat can harden or distort the rubber and damage the conductive components that run through the insole and outsole.

Store ESD shoes in a dry, clean space where they will not be crushed, soaked, or exposed to solvents. Do not fold the shoe, stack heavy equipment on it, or leave it next to a heat source. Rotating between two pairs gives the outsole time to dry fully and settle back into shape; see how to rotate shoes to extend lifespan.

Know When the Rating Has Worn Out

No cleaning routine can restore a shoe whose conductive path is broken. Check the outsole for wear patterns, cracks at the flex point, and separation where the sole meets the upper. A worn heel or toe changes the contact patch and can break the electrical connection. For help reading these signs, see shoe sole wear patterns and shoe sole replacement signs.

If your workplace runs a scheduled ESD test, treat a failed reading as the end of the shoe's working life. If it does not test, combine a dirt inspection with a visual check for worn treads at regular intervals. Replacing a pair before the outsole wears through is the reliable way to keep protection intact. For related ratings, see electrical hazard shoe rating.

Match the Care to the Shoe You Buy

The care routine that matters depends on the shoe's construction. Slip-resistant work shoes with ESD properties need the same sole cleaning as a dedicated ESD trainer. Safety toe shoes add a composite, steel, or alloy toe that should be inspected for deformation as part of your routine; see safety toe standard ASTM F2413.

Our buying guides compare the families that matter: best work shoes, best safety toe shoes, and best steel toe shoes. Read the manufacturer's care tag before you buy, and before you apply any product to the upper. A care procedure that protects the upper can ruin the ESD function if it touches the sole.

What to pick for your use

Questions

Does shoe polish ruin ESD shoes?

Polish, wax, and leather conditioner can leave an insulating film on the sole contact area. If the product touches the outsole, the shoe may fail its resistance test even when the upper looks clean. Keep conditioners on the upper only, and clean the sole with a damp cloth or soft brush instead.

Can I wash ESD shoes in a washing machine?

Machine washing is not the safe default for ESD shoes. It can soak the conductive insole, leave detergent residue, and distort the upper. Hand cleaning with a lint-free cloth and mild soap is gentler and easier to control. If a manufacturer says a pair is machine washable, follow that tag and air dry slowly.

How often should ESD shoes be cleaned?

At minimum, wipe the sole contact area and clear the tread after every shift. A scheduled deep clean depends on your work environment: electronics assembly lines tend to need light daily care, while grinding, painting, or chemical areas may need extra attention between shifts. Your ESD coordinator can set the right frequency.

Can a new insole ruin the ESD rating?

Yes, if the insole is not designed for ESD footwear. A standard cushioned insole can block the conductive path between your foot and the sole. Replace ESD insoles only with the same type supplied or approved by the manufacturer, and check with your workplace before changing anything that sits under your foot.

Do ESD shoes stop working when the sole wears down?

Eventually. A thin or cracked outsole changes the contact patch and can break the conductive path. Look for wear at the heel and toe, cracks at the flex point, and separation from the upper. Failed ESD tests are the clearest sign; worn soles are the next.

Should I store ESD shoes in a special bag?

A clean, dry bag can help if it keeps out dust and solvent vapor, but the main points are location: room temperature, away from heat, moisture, and crushing. Do not seal a damp shoe in a bag, and do not store them where cables or equipment press on the sole.