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What is that smell in my walls?
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
The smell coming from your walls could be linked to a pest problem or other issues such as mold or moisture. Pests, such as rodents or insects, may leave behind droppings, urine, or even dead bodies, which can create unpleasant odors. This scent can often seep into the walls and make the whole house smell bad. It’s important to identify whether there are any signs of pests in your home, especially in areas like Nashua, New Hampshire.
Beyond pest issues, mold and mildew are common culprits for wall odors, especially in areas with high humidity or previous water damage. These fungi thrive in damp environments and emit a musty smell that can be quite strong.
Additionally, there could be plumbing leaks behind your walls, which can lead to moisture accumulation and, therefore, mold growth. If you smell something chemical-like, it might indicate a gas leak from faulty appliances or pipes, which is a serious safety concern.
Pay attention to the specific nature of the smell, as this will give you clues about the source. Fecal or urine-like odors typically point to rodents or other animals, while musty smells often suggest mold. Strong chemical odors may indicate gas leaks or other harmful substances.
In summary, if you detect an unusual smell in your walls, it is often due to a pest problem, moisture, or plumbing issues, and it's important to investigate these factors promptly to protect your home.
Professional pest control eliminates troubles immediately. Our safe, effective treatments protect your loved ones from dangerous diseases.
A strong, lingering smell similar to urine or feces that seems to come from inside walls is a common sign of a pest issue. Rodents and other animals leave behind droppings and urine in hidden spaces, and these waste materials produce a sharp, unpleasant odor that does not go away with regular cleaning or air fresheners. If the smell is strongest near baseboards, in attics, or behind appliances, pests are likely the source.
A powerful, sickly sweet or rotting odor that suddenly appears and worsens over time often indicates a dead pest trapped inside the wall. Rodents, birds, or other small animals can die in hidden areas, and as their bodies decompose, they release gases that create a very distinct, foul smell. This odor usually becomes more intense in one specific area of the room, suggesting a carcass behind the wall surface.
When a bad smell is present along with visible pest signs, it strongly suggests that pests are causing the odor. Evidence such as droppings, gnaw marks, grease rub marks on walls, scratching or scurrying sounds, or shredded nesting materials near wall voids indicates active infestation. The combination of these physical signs with a noticeable foul odor points to pests living or dying inside the walls as the primary source of the smell.
To effectively get rid of pests, the first step is to identify where they are coming from. Look for signs of pest activity, such as droppings, nests, or chewed materials in hidden areas like attics, basements, and behind furniture. Pests commonly found in homes include rodents, ants, cockroaches, and termites. Observing their trails or entry points, such as small holes or cracks in walls, can help you understand how they are getting inside.
Once you identify where pests are entering, the next step is to seal these entry points. Use caulk to fill small holes and gaps in walls, windows, and doors. For larger openings, you may use metal mesh or foam sealant. This will help prevent further pest penetration and make your home less inviting to them.
Pests are often attracted to food and water sources. Keep your kitchen and dining areas clean by:
Traps and baits can be effective tools for controlling pests. For rodents, set up snap traps or live traps along their pathways. Make sure to place these traps away from children and pets. For insects like ants or cockroaches, use baits that attract them and contain poison to eliminate the entire colony over time. Follow the instructions on the packaging for the best results.
If the pest problem persists despite your efforts, consider contacting a professional pest control service. These specialists have expertise in identifying pest types, understanding their behaviors, and using advanced techniques to eliminate them safely and effectively. They can also provide regular inspections to ensure your home remains pest-free.
After addressing the current pest issue, implement preventive measures to keep them from returning. Regularly inspect for new entry points, maintain cleanliness, and monitor for any signs of pest activity. Additionally, consider installing screens on windows and doors and using natural repellents, such as essential oils, to deter pests.
Professional pest control eliminates troubles immediately. Our safe, effective treatments protect your loved ones from dangerous diseases.
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