How To Get Rid of Dead Rodent Smell
Some home extermination methods lead to hidden bodies in a wall, attic, crawlspace, or other hard-to-reach area. Whether it’s a mouse, rat, or even a squirrel, the smell can become unbearable if left unaddressed. The most important step in ridding your home of dead rodent smells is to identify the source and dispose of it. Here’s what to know about the issue, and how to neutralize it.
Common Rodents That May Die Inside Homes
Rodents often seek shelter indoors, especially during colder months. The most common culprits behind dead animal odors include:
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House mice: Small and elusive, mice often nest in walls or insulation.
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Roof rats: Agile climbers that may die in attics or behind walls.
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Norway rats: Larger rodents that may get trapped in basements or crawlspaces.
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Squirrels: Though not technically rodents, squirrels can enter through attic vents and sometimes become stuck.
Signs of a Dead Rodent in Your Home
Before the odor becomes overwhelming, you may notice a few subtle signs that point to a dead rodent in your home. These can include a sudden, unexplained foul smell, an increase in fly activity around a specific area, or visible stains or discoloration on walls or ceilings. In some cases, you might have heard scratching or scurrying noises that suddenly stop, which can also be a clue that a rodent has died nearby.
How long does the dead rodent smell last?
The odor from a decomposing rodent can linger for several days to a few weeks, depending on several factors. Smaller animals like mice tend to break down faster, while larger rodents like rats or squirrels may take longer. Warm temperatures and high humidity can accelerate decomposition, while cooler or poorly ventilated areas may cause the smell to stick around longer. Even after the elimination of the source of the dead rodent smell, the unsettling scent may linger for up to two weeks. The stronger and more persistent the odor, the more likely it is that professional help is needed to locate and address the source.
How to Neutralize Dead Rodent Smells
Locate the Source (If Possible)
If you can identify the general area where the smell is strongest, you may be able to remove the rodent. However, this often requires cutting into drywall or accessing crawlspaces or attics.
Use Odor Absorbers
Place odor-neutralizing materials near the affected area, such as:
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Charcoal bags
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Baking soda
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Commercial odor absorbers
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Vinegar dishes
These won’t remove the cause, but can help reduce the intensity of the smell while the body decomposes or until it can be removed.
Clean and Disinfect
If the rodent is accessible and removed, clean the area with a disinfectant to eliminate bacteria and remaining odor. Always wear gloves and use proper safety precautions.
When to Call for Professional Help
If you can’t locate or remove the source of the smell, or if rodents keep finding their way inside, it’s time to contact a professional. Persistent odors may indicate an ongoing infestation or entry point that needs to be addressed.
Orkin Pros are trained to identify rodent entry points, nesting areas, and potential attractants. Our exterminators will develop a customized rodent control plan to help remove the source of the issue and prevent future problems. If you suspect a dead rodent or an ongoing infestation, contact your local Orkin branch to schedule an inspection.
More Information
Explore common rodent repellents, including natural and chemical options, and learn why these methods may not always provide long-term protection against rats and mice.
Learn about different types of rodent traps, how they work, and when they’re most effective. Find out how proper placement and technique can impact results.
Understand how rodent smoke bombs work, their limitations, and why they may not be a reliable solution for long-term rodent control in or around your home.
