A Story from the Field: Opening the First Shoebox After the Water Went Down

Supaporn has run a shoe and leather bag shop in the Pak Nam Pho trading district of Mueang Nakhon Sawan for almost twenty years. Everyone on the street calls her "Je Supaporn". Her shop is a single shophouse unit. At the front, shelves display leather shoes, court shoes for office workers and school shoes, and one wall is hung with genuine and synthetic leather bags. At the back is a stock room packed from floor to ceiling with shoeboxes. Her core customers are parents bringing children to buy school shoes, civil servants, and company employees who want a new pair of leather shoes before starting a job.

This year the Chao Phraya River rose higher into the market district than in previous years. About thirty centimeters of water entered the shop and stayed for several days. Supaporn and her son lifted part of the lower stock to higher shelves, but the stock room at the back is narrow and dark. The boxes on the lowest shelves went under water. The boxes higher up did not touch the water, but they sat in a closed, hot, humid room for days on end.

When the water receded, she opened the stock room door. A musty smell of damp cardboard and wet leather rolled out at once. The lowest boxes had collapsed, gone soft and were streaked with mud. She opened a box of leather shoes from a middle shelf, one the water had never reached, and stopped. The black court shoes inside were covered with a thin, powdery white bloom across the leather. When she turned to look at the leather bags hanging low on the wall, she saw grey-green spots along the seams and corners.

"How can things the water never touched still go moldy?" she asked her son. It is the same question many shoe and leather goods shop owners face after a flood, because the humidity trapped in a closed room can damage stock even when the water never reaches it.

Why Shoes and Leather Goods Grow Mold So Easily After a Flood

Leather is a natural material. It absorbs moisture from the air, and it contains oils and finishing compounds that mold can feed on. When humidity stays high for days and the room has no air movement, mold can start growing on leather surprisingly quickly. On top of that, a shoe shop is full of other materials that hold moisture and pass it on to the stock.

• Cardboard boxes and tissue paper. These soak up water and humidity, become a breeding ground for mold, and pass moisture on to the shoes inside.
• Insoles and foam inside shoes. They hold moisture deep inside, so the shoe smells musty even if the outside looks dry.
• Fabric bag linings. Mold often grows on the lining first, long before it shows on the outside.
• Wooden shelves and bag display walls. Swollen plywood becomes a reservoir of spores that drift onto the products.
• Carpet in front of the fitting bench. This is where customers take off their shoes and rest their feet. If it stays damp, odor and microorganisms accumulate.
• A windowless stock room. Moisture has nowhere to go, so this is where musty odor builds up the most.

Synthetic leather and rubber are not immune either. Synthetic leather can trap moisture between its coating and fabric backing, and mold can grow in the stitching and edges. Rubber soles and heel caps collect silt in their tread, and that silt carries both bacteria and spores.

What the Shop Faces: Health, Customer Trust and the Cost of Stock

Health. Floodwater in a market district is usually contaminated with drain water, food waste and sewage. Silt left on the shop floor and on boxes that were submerged may carry bacteria that cause diarrhea or wound infections. Market areas also tend to have many rats, so cleaning up without boots and gloves carries a risk of leptospirosis. Mold spores released from boxes and products can make people with allergies sneeze, rub itchy eyes, suffer a blocked nose or have an asthma attack. That applies to the owner, the staff and the customers who come in to try on shoes.

Customer trust. A customer buying leather shoes or a leather bag expects something new, fresh-smelling and clean. If they take a pair of shoes out of a box and smell mustiness, or see white bloom on a bag, they will not buy. They may not come back at all. In a trading district where competing shops are only a few doors away, keeping the trust of regular customers is everything.

The cost of stock. Shoe and leather goods stock is valuable. Throwing everything away means a heavy loss. But keeping damaged items mixed with good ones lets mold spread through the whole room. Sorting stock systematically and restoring the storage space properly is the best way to save as much good stock as possible.

There is also the time pressure of the season. Many shops count on demand when schools reopen and when people replace shoes ruined by the flood. A shop that reopens clean and on time can serve that demand. A shop still struggling with musty stock weeks later loses it to others.

Why Common Fixes Can Make the Damage Worse

• Wiping leather with bleach. Bleach discolors, blotches, dries out and cracks leather. It should never be used on leather goods.
• Leaving items in strong sun all day. Sun helps them dry, but it shrinks leather, fades color and leaves the surface stiff and harsh.
• Using a hot hair dryer. High heat weakens sole adhesive and deforms leather.
• Spraying perfume or deodorizer inside shoes. It masks the smell briefly, but it adds moisture and does nothing about the source.
• Brushing off the white bloom and putting items back in the same box. The old box still holds spores and moisture, and mold will return within days.
• Running fans in the stock room. Fans help ventilation, but they also spread spores onto stock that was still clean.

The common thread is that these methods focus on individual items while ignoring the environment they sit in. As long as the stock room, the shelves and the air remain contaminated, every cleaned item is at risk of being re-contaminated as soon as it goes back.

There is a practical side to this as well. Cleaning leather goods one by one takes a great deal of time, and shop owners are already exhausted after the flood. If that effort is wasted because items go back into a room that is still full of spores, the frustration is enormous. Restoring the room first, and cleaning the stock in parallel, means the work only has to be done once. It also gives the owner a clear point at which the shop is ready: when the room has been treated, ventilated and checked, and the sorted stock goes back onto clean shelves in fresh boxes.

The Solution: Sort the Stock, Then Restore the Space with Disinfection Fogging and Controlled Ozone

For shoe and leather goods shops, World Health Disinfection (WHD) focuses first on restoring the shop and stock room themselves, so that good stock has a safe, clean place to return to and does not pick up spores and odor again.

1. Disinfection fogging service. We use CHEMGENE HLD4H disinfectant through ULV equipment. The fine mist reaches emptied shelves, walls, floors, stock room corners and the space behind the bag display wall once the stock has been moved out.

2. Ozone treatment service. We use a professional ozone generator in a sealed room to deal with airborne spores and break down the odor molecules embedded in walls, ceilings and shelves.

Precautions for leather and rubber. High concentrations of ozone over long periods can dry out leather, change its color and degrade rubber soles. That is why we recommend moving high-value stock out of the room during treatment, or packing it in sealed plastic bags or boxes, and why we use a controlled ozone dose based on room size. Cleaning the surface of individual leather items should be done with methods made for leather, or with advice from a leather care specialist. No people, pets or plants may be in the room during treatment, and the room must be ventilated until the air is fresh before anyone goes back in.

A Practical Guide to Sorting Shoe and Bag Stock After a Flood

Before our team fogs and treats the space, the owner should divide the stock into groups so that good items are not mixed with damaged ones.

• Group 1: items that were submerged. Canvas shoes, lower-priced leather shoes or bags that went completely under water are usually not worth restoring to sell as new. Move them out of the shop area.
• Group 2: items that stayed dry but show white bloom or mold spots on the surface. If the leather is smooth and the mold is only just starting on the surface, it can often be cleaned with leather-appropriate methods and then stored in the restored space.
• Group 3: items that stayed dry and show no visible mold but smell musty. Replace the box and tissue paper, keep them in a well-ventilated area, and check again later.
• Group 4: stock on the top shelves that was sealed in plastic bags. This is often unaffected. Move it to a dry place before fogging and ozone treatment begins.
• Damp cardboard boxes. Discard all of them. Do not reuse them.

Keeping notes and photographs of damaged items in each group will help later when you talk to suppliers or your insurance company. Some suppliers may also have their own guidance or return arrangements for flood-affected stock, so it is worth asking before you make final decisions on higher-value lines.

How the WHD Team Works in a Shoe and Leather Goods Shop

1. Site survey. We check the water level, the stock room, shelves, the bag display wall, carpets and the air conditioning.
2. Sorting and clean-up advice. We help plan which groups of stock to move out, which boxes to discard and where silt needs to be washed away.
3. Moving or packing stock. Good stock is moved out or packed in sealed bags, leaving the room as empty as possible.
4. ULV disinfection fogging. CHEMGENE HLD4H is applied to floors, walls, emptied shelves and the restroom.
5. Controlled ozone treatment. The room is sealed and treated for the set time. No one may enter during treatment.
6. Ventilation. Doors and exhaust fans are opened until the air is fresh.
7. Re-check before stock goes back. We check the smell of the stock room and shelves. If any odor remains, we plan a targeted second treatment.

After reopening, the CHEMGENE HLD4H spray is convenient for wiping the fitting bench, shelves and counter every day.

Setting Up the Stock Room So Mold Does Not Come Back

Restoration is the first step. The second step is changing how stock is stored, so the shop is more resilient next time the river rises or the rainy season brings weeks of high humidity. None of these changes is expensive, but together they make a real difference to how quickly mold can take hold in a busy shop.

• Raise the lowest shelf. Keep the bottom shelf at least a hand's width off the floor, and ideally higher in a flood-prone district. Use plastic or metal shelving instead of particle board where possible.
• Leave a gap between shelves and walls. A few centimeters of space lets air move and stops moisture from the wall passing straight into boxes.
• Use breathable storage for leather. Leather goods stored long term do better in breathable dust bags than in sealed plastic, provided the room itself is dry. Sealed plastic is a short-term measure during a flood or treatment.
• Rotate slow-moving stock. Leather items that sit untouched for months are the most likely to develop bloom. Take them out, inspect them and let them air periodically.
• Ventilate the stock room daily. Even ten to fifteen minutes with the door open and an exhaust fan running makes a difference in a windowless room.
• Keep a simple flood plan. Know which shelves to empty first, where to move stock and who will help. The faster stock goes up, the less there is to sort later.

The Fitting Area: Where Customers Notice First

In a shoe shop, the fitting area is where customers spend the most time and pay the closest attention. They sit down, take off their own shoes, put their feet on the carpet or a footrest, and slide their feet into products straight from the box. If anything feels damp, smells musty or looks stained, it is noticed immediately, and the sale is at risk. That makes the fitting area a priority in any post-flood recovery plan.

• Fitting benches and stools. Fabric or synthetic leather seats that sat in floodwater usually need new upholstery. Wooden or metal frames can be washed, disinfected and dried.
• Carpet and foot mats. Submerged carpet should be removed. Replace it with a washable mat that can be cleaned and disinfected easily every day.
• Shoehorns, sizing devices and try-on socks. These touch every customer. Clean and disinfect hard items, and replace disposable try-on socks or footies that were stored in damp boxes.
• Mirrors and the lower walls around them. Mold spots on the lower part of the wall near a mirror are easy to miss from a standing position but obvious to a seated customer. Check them at seated eye level.
• Air flow around the seating. If the air conditioning was off for a long time, have it checked and cleaned before customers sit directly under or in front of it.

Paying attention to these small details sends a clear message to returning customers: the shop has not just reopened, it has been properly restored. In a neighborhood where people talk, that impression is worth as much as any discount.

10 Reasons Shoe Shops in Nakhon Sawan Choose WHD After a Flood

1. We focus on making the stock room clean before good stock goes back in.
2. ULV disinfection fogging reaches high shelves and narrow corners.
3. We use CHEMGENE HLD4H disinfectant on shop surfaces.
4. Ozone treatment breaks down musty odor in closed rooms where fans cannot help.
5. The ozone dose is controlled for shops that hold leather and rubber.
6. We advise on sorting stock into groups so less good stock is thrown away.
7. Work can be done outside opening hours or on closing days.
8. We offer ozone treatment for paint and chemical odors after shop repairs.
9. Our dust mite removal service cares for carpets and the customer sofa.
10. Our mosquito spraying service covers the area around the shop and the back alley.

Before and After Restoring the Shop

Customer Voice (Example Scenario)

"At first I was really discouraged. I thought I would have to throw out the whole stock room. The team suggested sorting things into groups: what had been under water went out, what only had bloom went for cleaning, and they fogged and treated the room while it was empty. Once everything went back in new boxes, the back room no longer had that old musty smell."

— Supaporn, shoe and leather bag shop owner, Pak Nam Pho, Mueang Nakhon Sawan (example scenario)

Frequently Asked Questions

Q: Can leather shoes and bags be ozone-treated directly?
A: We do not recommend exposing leather and rubber goods to high concentrations of ozone for long periods, because it can dry leather and degrade rubber. The safer approach is to move items out or pack them sealed, and treat the empty room.

Q: Is the white bloom on leather shoes always mold?
A: Not always. Sometimes it is fat or salt working its way out of the leather. After a flood with very high humidity, however, it is often mold. Set those items aside and clean them with leather-appropriate methods.

Q: Can I reuse shoeboxes that stayed dry but smell musty?
A: Cardboard holds odor and spores very well. If a box smells musty, replace it.

Q: How long will the shop need to close?
A: It depends on the shop size and the amount of stock. A single-unit shop can usually be fogged and treated within one day, though sorting the stock may take longer.

Q: When can we go back in after ozone treatment?
A: After the cycle, the room must be ventilated until the air is fresh. Our team will advise on timing.

Q: How do we stop the mold from coming back?
A: Fix any leaks, keep stock off the floor, leave space between shelves and walls, ventilate the stock room daily and keep checking for odor.

Q: Our shop is in another district of Nakhon Sawan. Can you help?
A: Contact us by phone or LINE to check the service area.

Save the Good Stock and Reopen a Clean Shop

Let the WHD team help you plan the recovery of your shoe and leather goods shop, from sorting to the final odor check.

Book Ozone Treatment – Click Here

See Our Disinfection Service – Click Here

Call 065-556-6294 · LINE @whd268 · Email worldhealthdisinfection@gmail.com

Related Links

• Ozone treatment for odors and chemical residue
• Residential ozone disinfection
• CHEMGENE HLD4H disinfectant spray
• All articles

Health reference: World Health Organization (WHO): Floods · Department of Disease Control, Thailand