How to Remove Odor from Boots: Dry and Refresh Methods

Dry your boots before you deodorize

Moisture is the root cause of most boot odor. Bacteria that live on your skin produce odor as they break down sweat, and they multiply fastest in damp, warm, dark spaces. A boot worn all day traps sweat against the lining, which gives bacteria exactly what they need to grow. If you skip the drying step and go straight to deodorizing, you are sealing moisture inside the boot, which makes the problem worse over time.

Start by removing the insoles and laces. Set the boots in a well ventilated area at room temperature. Avoid placing them near a radiator, heater, or in direct sunlight, because intense heat can dry out leather and cause it to crack. Instead, let them dry naturally, which may take 12 to 24 hours depending on the material and how much moisture they absorbed. If you need to speed things up, you can learn more in our guide on drying wet shoes properly.

For boots that are wet through, such as after rain or snow, the drying process is the same but takes longer. Remove any visible moisture with a clean towel first, then let the boots dry at room temperature. Never force-dry waterproof membranes or insulated linings with high heat, as this can damage the materials. Once the inside feels dry to the touch, you can move on to the deodorizing step.

Baking soda absorbs odor and moisture

Baking soda is one of the simplest and most effective odor removers for boots. It works by absorbing moisture and neutralizing the acidic compounds that bacteria produce. Because it addresses the moisture itself, it attacks the problem at the source rather than just covering up the smell with fragrance.

To use it, sprinkle a generous layer of baking soda directly into the boot, making sure it reaches the toe box and the heel area where moisture collects. Leave it overnight, or for at least eight hours. In the morning, turn the boot upside down over a trash can or outside and tap the sole to shake out the powder. You can also use a vacuum with a hose attachment to remove any remaining residue.

Repeat this treatment once a week for maintenance, or after every few wears if you notice odor starting to build up. For a more thorough refresh, mix a few drops of essential oil into the baking soda before applying it, if you prefer a light scent. The baking soda still does the absorbing work, and the oil adds a fresh note without masking the problem.

For a deeper clean that covers both the inside and outside of the boot, see our instructions on how to deodorize shoes with baking soda.

Activated charcoal for long-lasting freshness

Activated charcoal is another powerful option for removing boot odor. It has a large surface area that traps odor molecules and moisture inside its pores, effectively pulling them out of the air. Unlike baking soda, which you apply directly inside the boot, charcoal usually comes in small pouches or sachets that you place inside the boot and leave in place.

To use activated charcoal, place one pouch in each boot and leave them for 24 to 48 hours. The charcoal works passively, so you do not need to shake it out or rinse the boot afterward. This makes it a good choice for boots that you want to keep odor-free while they sit in a closet or entryway between wears.

Over time, the charcoal becomes saturated with moisture and odor molecules and stops working. Most charcoal sachets need to be replaced every few months, depending on how often you wear the boots. Some brands offer rechargeable charcoal that can be reactivated by placing the pouch in direct sunlight for several hours, which drives off the trapped moisture and restores its absorbing power.

Activated charcoal works well in combination with baking soda. Use baking soda for a quick overnight refresh, and keep charcoal pouches in the boots for ongoing odor control when they are not being worn. Both methods are safe for leather, suede, and synthetic uppers, as long as you do not let the charcoal pouch sit against wet leather for extended periods.

Daily habits that prevent boot odor

Prevention is easier than removal. The single most effective habit is to rotate between two pairs of boots so each pair gets at least 24 hours to dry out between wears. Even if the boots feel dry on the outside, the lining and insole can still hold moisture. Giving them a full day off allows that moisture to evaporate completely, which starves bacteria before they can produce odor.

Wearing the right socks also makes a big difference. Socks made from synthetic fibers or wool wick moisture away from your skin better than cotton, which tends to hold sweat against the foot. If you wear the same pair of boots every day, change your socks halfway through the day, especially if your feet sweat heavily. The APMA notes that foot health depends heavily on keeping feet clean and dry, and the same logic applies to the inside of your boots.

Consider using a boot tree or shoe tree when your boots are not being worn. A cedar shoe tree absorbs moisture from the lining, helps the boot keep its shape, and leaves a mild, natural wood scent. It is not a substitute for baking soda or charcoal, but it adds a layer of protection between wears. See our shoe tree guide for more details on choosing and using one.

If you have a pair of boots that you wear for work or outdoor activities, and they tend to get wet or sweaty inside, take the extra step of removing the insoles after each wear and letting them dry separately. The insole is usually the first part of the boot to trap moisture and odor, so drying it on its own speeds up the process considerably.

When simple deodorizing is not enough

If you follow the drying and deodorizing routine for a few weeks and the smell does not improve, or if it comes back quickly after each treatment, the odor may be coming from something other than normal sweat and bacteria. For example, if your boots get wet frequently and do not dry out fully, mold or mildew can grow in the lining, which produces a musty, persistent smell that baking soda and charcoal will not fully remove. In that case, you need a deeper clean that reaches the inner materials.

Persistent foot odor can also be a sign that your feet need more attention. If your feet sweat excessively, or if the odor is accompanied by itching, burning, or peeling skin, it may indicate a fungal infection. The OrthoInfo resource from the American Academy of Orthopaedic Surgeons notes that many foot conditions are treatable, and a podiatrist can help identify the cause of persistent odor and recommend an appropriate treatment. If you have concerns about foot health, checking with a medical professional is a reasonable step.

If the issue is limited to the boots themselves, you can try a deep-cleaning method. For removable insoles, wash them by hand with mild soap and water, then let them dry completely before putting them back in. For the boot interior, a mixture of water and white vinegar can help neutralize odors, but test it on a small area first. You can find more thorough instructions in our article on how to clean the inside of shoes.

For leather boots, a professional cleaning or conditioning service may be able to remove deep-set odors without damaging the material. This is worth considering for expensive or well-loved pairs, especially those with shearling or wool linings that are difficult to clean at home.

Which method should you choose?

The best method depends on how often you wear the boots and how quickly the odor builds up. For most people, a combination of weekly baking soda treatments and daily drying habits is enough to keep odor under control. If you have a pair of boots that sits in the closet for weeks at a time, activated charcoal pouches are the more convenient option, since they work passively and do not require a nightly routine.

If you only have one pair of boots and cannot rotate, put extra effort into drying them after each wear. Remove the insoles, loosen the laces, and let them air out for a full day before wearing them again. This alone will prevent most odor problems.

If odor is tied to activities that make your feet sweat, such as work boots worn for long shifts, combine the deodorizing treatments with moisture-wicking socks and consider using an antiperspirant on your feet before putting them on. The APMA emphasizes the importance of keeping feet clean and dry for overall foot health, and that principle applies directly to the inside of your boots.

For boots that are used in wet or humid conditions, such as rain boots or winter boots, the priority is always thorough drying. Odor bacteria cannot survive in a completely dry environment, so making sure the boots are dry before you store them is the single most effective preventive measure.

What to pick for your use

Questions

How long do I leave baking soda in my boots?

Leave baking soda in your boots overnight, or for at least eight hours. In the morning, shake it out thoroughly. If the odor is strong, repeat the treatment for two or three nights in a row.

Can I use regular charcoal instead of activated charcoal?

Regular barbecue charcoal is not effective for odor removal because it has not been activated, which means it has a much smaller surface area. Activated charcoal is specially processed to have millions of tiny pores that trap odor molecules. Use activated charcoal pouches designed for odor control.

Will baking soda damage leather boots?

Baking soda is generally safe for leather interiors if you leave it dry and shake it out completely. It absorbs moisture, which helps protect leather from the damage caused by excess dampness. Do not let baking soda stay in wet boots for extended periods, as the moisture can soften the leather and cause stretching.

How often should I deodorize my work boots?

For work boots worn daily, especially in warm conditions or for long shifts, treat them with baking soda once a week as a baseline. If you notice odor starting to build up sooner, increase the frequency. Also remove the insoles after each shift and let the boots air out overnight.

Can I wash the inside of my boots with soap and water?

For removable insoles, hand washing with mild soap and water is fine, as long as you dry them completely before returning them to the boots. For the boot interior itself, avoid saturating the lining with water, especially in leather or suede boots, because excess moisture can damage the material and make odor worse. Use a damp cloth and dry thoroughly afterward.

Should I see a doctor for foot odor?

If foot odor persists despite good hygiene and boot care, or if it is accompanied by other symptoms like itching, burning, or peeling skin, it may indicate a fungal infection or another condition. A podiatrist can help identify the cause. The OrthoInfo resource from the American Academy of Orthopaedic Surgeons provides patient education on many foot conditions.