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Why does it smell like a dead animal under my floor?
Signs Of The Pests Causing The Unpleasant Smell
How To Get Rid Of This Smell
Professional Solution That Actually Works
CEO at AnchorPest Services
Updated November 23
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With over 20 years of experience, Anchor Pest offers personalized, chemical-safe treatments for homes and businesses across Manchester and surrounding counties
When you notice a strong, unpleasant odor that resembles a dead animal underneath your floor, it is likely due to a pest problem. Pests such as rodents—particularly mice and rats—are common in homes, and they can sometimes find their way into spaces beneath the flooring, such as crawl spaces, basements, or even between walls. If they happen to die there, their bodies can begin to decompose, which leads to a foul smell permeating your home.
In addition to rodents, other animals like squirrels or raccoons could also enter your home, especially if there are any gaps or openings. This is particularly relevant in areas like Nashua, New Hampshire, where wildlife is prevalent. Animals that die in hard-to-reach spots can create a persistent odor that lingers even after the initial remains start to decompose.
As the body breaks down, it releases gases and fluids that generate a strong smell, which can become unbearable. Over time, if you leave the dead animal in place, this degrading process will continue, causing the smell to intensify.
Furthermore, the odors from decomposition can sometimes mix with existing household smells, making it more challenging to pin down the source of the foul odor. It's important to address the underlying pest issue promptly to prevent further decay and to ensure your home remains safe and comfortable.
Professional pest control eliminates troubles immediately. Our safe, effective treatments protect your loved ones from dangerous diseases.
A continuous foul smell that seems to come from lower areas of the home often indicates a decomposing rodent or other small animal. As pests decay, they release gases that create a strong, unmistakable odor that lingers and worsens over time.
Visible signs of pest activity such as droppings, gnaw marks, or scratching noises can signal that rodents have recently been active in the area. If the odor appears shortly after noticing these signs, it may indicate that a pest has died under the floor.
Decomposing animals can attract insects such as flies or beetles, which often gather near the source of the smell. In some cases, the decomposition process may also create a slightly warmer spot on the floor or wall, helping pinpoint the location of the dead pest.
To effectively deal with a pest problem in your home, follow these steps to eradicate the pests and prevent their return:
Identify the Pest
The first step is to determine what type of pest you are dealing with. Common household pests include:
Look for signs such as droppings, gnaw marks, or nests to help identify the pest.
Seal Entry Points
Pests can enter your home through tiny openings. Look for and seal gaps or cracks around:
Use caulk, steel wool, or other materials to close these entry points, preventing pests from coming back.
Remove Food and Water Sources
Pests are attracted to food and water. To limit their access:
Set Traps
If you are dealing with rodents or insects, traps can be an effective solution:
Check traps regularly and dispose of caught pests properly.
Use Chemical Treatments
In some cases, chemical pesticides may be necessary:
Monitor the Situation
After you’ve taken steps to eliminate pests, keep an eye on the situation:
By following these thorough steps, you can effectively eliminate pests from your home and create an environment that discourages their return.
Professional pest control eliminates troubles immediately. Our safe, effective treatments protect your loved ones from dangerous diseases.
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