How to Get Mildew Smell Out of Rug: Complete Guide

If you’ve ever walked into a room and been hit with a musty, unpleasant odor coming from your carpet or rug, you’re not alone. One of the most common household issues people face is dealing with mildew smells. In this guide, we’ll explain exactly how to get mildew smell out of rug effectively and safely—without damaging your rug or risking your health.

This informational post will help homeowners, renters, and business owners understand why mildew smells occur, how to treat them using proven methods, and how to prevent them from returning in the future.

Understanding Why Rugs Smell Musty or Like Mildew

Before diving into solutions, it’s important to know why rugs develop mildew smells in the first place. The primary cause of a musty or mildew odor is moisture trapped in the fibers of the rug. This moisture can result from:

Spills not cleaned properly
High indoor humidity
Leaks from windows, plumbing, or foundations
Improper carpet cleaning or drying
Pet accidents

When moisture remains in a rug or carpet for too long, mold and mildew spores begin to grow. This fungal growth not only causes odor but can also pose health risks, such as allergies, respiratory problems, or skin irritation.

Is It Dangerous to Leave the Smell Untreated?

Yes, ignoring the smell can lead to further mold development, which can:

Worsen indoor air quality
Trigger allergic reactions
Cause irreversible damage to the rug’s materials
Spread to other areas like hardwood floors or baseboards

That’s why it’s critical to know how to get mildew smell out of rug using both home remedies and professional tips.

Step-by-Step Guide on How to Get Mildew Smell Out of Rug

Let’s walk through a complete, practical process to remove that musty odor for good.

Step 1: Identify and Remove the Source of Moisture

If your rug continues to absorb moisture, the smell will come back—even after cleaning. Check for:

Leaking pipes nearby
Damp flooring beneath the rug
Improper ventilation
Humid indoor air

Fix any leaks or sources of dampness first. If needed, use a dehumidifier to lower moisture levels indoors.

Step 2: Take the Rug Outside (If Possible)

Sunlight and fresh air are natural enemies of mildew. Take the rug outdoors on a dry, sunny day and hang it over a railing or clothesline.

Why this helps:

Sunlight contains UV rays that kill mold and mildew spores
Fresh air helps neutralize the odor
It allows the rug to dry completely before deodorizing

Let the rug air out for several hours or a full day, rotating it to ensure even exposure.

Step 3: Vacuum Thoroughly

Use a high-powered vacuum to remove any debris, dust, and mildew particles from the rug. Focus on both sides:

Use a vacuum with a HEPA filter to trap mold spores
Go over the surface slowly, especially in thick or shag rugs
Don’t forget the underside of the rug

This step prepares your rug for deeper deodorizing.

Step 4: Apply a Baking Soda Treatment

Baking soda is a natural deodorizer and a key step in how to get mildew smell out of rug.

Instructions:

Sprinkle a generous layer of baking soda over the entire rug.
Let it sit for 12 to 24 hours.
Vacuum it thoroughly once dry.

Why this works:

Baking soda absorbs moisture
It neutralizes odors instead of just covering them
It’s safe for most rug types

Step 5: Use Vinegar Solution for Deeper Cleaning

White vinegar is mildly acidic and effective at killing mildew spores and removing odors.

Vinegar Cleaning Mix:

1 part white vinegar
2 parts water
A few drops of essential oil (optional for fragrance)

Spray the solution lightly over the rug, focusing on smelly areas. Let it sit for 15-30 minutes, then blot with a clean, dry towel. Let the rug air dry completely.

Important: Don’t oversaturate the rug. Too much liquid can worsen mildew.

Step 6: Try a Commercial Enzyme Cleaner (If Needed)

If natural methods don’t work, a good enzyme-based carpet cleaner is your next option. These cleaners break down organic compounds like mold and mildew.

Look for products labeled:

Pet odor remover (great for mildew, too)
Mold and mildew eliminator
Non-toxic and rug-safe

Follow the label instructions carefully. Most enzyme cleaners need several hours to work, followed by drying and vacuuming.

Alternative Methods to Remove Mildew Smell from Rugs

While the above method is most reliable, some other options can be effective depending on the rug type:

Steam Cleaning

Hot steam can sanitize and deodorize at the same time. However, you must ensure proper drying afterward to prevent more mildew.

Hydrogen Peroxide Solution

Mix 1 part hydrogen peroxide (3%) with 3 parts water. Spot test on a small hidden area first to avoid bleaching. Apply lightly and let dry.

Vodka Spray

Surprisingly, vodka is a powerful odor neutralizer. Pour it into a spray bottle and mist over the rug. Let it evaporate naturally.

How to Prevent Mildew Smell from Returning

Once you’ve removed the odor, prevention is the key to keeping it from coming back.

Tips to Keep Rugs Smelling Fresh:

Dry spills immediately with towels and fans
Use area rug pads that allow airflow
Vacuum weekly to remove dust and allergens
Deep clean rugs every 6-12 months
Use a dehumidifier in damp climates or basements
Avoid leaving wet shoes or clothes on rugs

Preventing excess moisture is the best long-term strategy.

When to Replace a Rug with Mildew Smell

Sometimes, rugs are beyond saving—especially if:

The rug backing is rotting or permanently stained
The mildew smell persists after multiple cleanings
There is visible mold growth spreading

If health is a concern or the rug is inexpensive, replacement may be the safer option.

Can a Professional Carpet Cleaner Help?

Yes, hiring a professional carpet or rug cleaner is recommended if:

You have a large area rug or wall-to-wall carpet
DIY methods haven’t worked
Do you suspect hidden mold or water damage

Professionals use industrial-strength steam cleaners and antimicrobial treatments to eliminate odors at the root.

Best Rug Types to Avoid Mildew

If you’re purchasing a new rug or replacing an old one, choose materials that resist moisture and mildew:

Wool (naturally antimicrobial)
Polypropylene (mildew-resistant synthetic)
Jute and Sisal (good airflow, but keep dry)
Bamboo (easy to clean and dry)

Avoid cotton or untreated rugs in damp areas.

FAQ: How to Get Mildew Smell Out of Rug

Q: Can I use essential oils to mask the smell?

A: Yes, essential oils like tea tree or lavender can help—but they should be used after removing the source of the smell, not as a replacement.

Q: Will sprinkling carpet freshener help?

A: It might offer a temporary solution, but it won’t eliminate mildew or mold. Always clean before deodorizing.

Q: Is vinegar safe for all rug types?

A: Not always. It’s best for synthetic rugs and some natural fibers, but always spot-test first.

Q: How long does it take to remove the smell completely?

A: Depending on severity, it can take anywhere from 24 hours to a few days for the smell to fully disappear after proper treatment.

Conclusion: How to Get Mildew Smell Out of Rug the Right Way

Dealing with a musty or mildew odor in your rug can be frustrating, but it’s manageable with the right approach. By following this complete guide on how to get mildew smell out of rugs, you’ll not only remove the odor but also improve your indoor air quality and extend the life of your rug.

Start by identifying the source of moisture, cleaning with proven home solutions like baking soda and vinegar, and preventing future problems with good ventilation and rug care habits. And when needed, don’t hesitate to seek professional cleaning help.

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Alex Carter

Alex Carter is a dedicated writer at Informational Blog, focused on providing clear and helpful information about business insurance and related topics. Alex’s goal is to simplify complex ideas, making it easy for readers to understand and take action.