How can I remove the smell of a dead mouse in the wall? - briefly
Extract the dead rodent, thoroughly clean the cavity with an enzymatic cleaner, then ventilate and place activated charcoal or baking‑soda to absorb remaining odor. If the smell persists, repeat cleaning and consider a commercial odor‑neutralizing spray.
How can I remove the smell of a dead mouse in the wall? - in detail
Identify the source. Use a stud finder or tap the wall to locate the exact spot where the carcass is lodged. Once pinpointed, cut a small access panel with a drywall saw, taking care not to damage wiring or plumbing.
Remove the body. Wear disposable gloves and a mask. Pull the remains out with pliers or a vacuum equipped with a HEPA filter. Seal the waste in a double‑bagged container and discard according to local regulations.
Clean the cavity. Scrub all exposed surfaces with a solution of warm water and an enzyme‑based cleaner. Rinse with clean water and dry thoroughly using fans or a dehumidifier.
Neutralize odor. Apply one of the following treatments, allowing each to sit for at least 30 minutes before proceeding:
- Baking soda spread on the interior surfaces, then vacuumed.
- Activated charcoal bags placed in the cavity for 24–48 hours.
- Commercial odor‑neutralizing gel or spray containing cyclodextrin or ozone‑generating agents, following manufacturer instructions.
Seal the opening. Replace the drywall piece, tape, mud, and finish to match surrounding wall. Paint over the repaired area with a primer that includes odor‑blocking properties, then apply the final coat.
Prevent recurrence. Inspect the exterior for entry points; seal gaps around utility penetrations, vents, and foundation cracks with steel wool and silicone caulk. Install traps or deterrents in attics and crawl spaces. Maintain a clean environment to discourage rodents from nesting within the structure.