Assuming garbage management is not a problem the next best guess is an animal carcass somewhere in your wall voids attic or some other unfrequented or inaccessible part of your home.
Dead mouse in attic.
Where there is one mouse there is always more.
For that you need to purchase an odor eliminator not just a scent or perfume to mask the smell.
Once i remove the dead animal s i mop up any bodily fluids and maggots i remove any soiled insulation and i spray down the area with a special enzyme based cleaner that destroys biohazard waste.
When a rat squirrel bird or other animal dies it doesn t take long for a blow fly or house fly to zero in on the carcass where she proceeds to lay eggs.
So when they die they re already buried down in some tunnel.
02 18 2004 the problem with dead mice in the attic is that they are hard to find.
Check in rooms crawlspaces basements attics garages storage sheds any anywhere else you can easily access paying close attention to the odor levels.
The dead mouse smell that jerry and the gang failed to identify is caused by a mix of methane sulfur dioxide hydrocarbons and other chemicals that emit from the decomposed body of a rat or a mouse.
A mouse may enter the attic through.
More commonly mice die in your attic especially in higher numbers because someone has applied a mouse poison rodenticide.
This is because they love to burrow and they dig their way down into the insulation.
If you ve put rat poison in your attic then i guarantee that you have some dead rats or mice in your attic and walls perhaps several.
Occasionally you may come across a dead mouse in the attic but don t think that the problem is over.
Try to locate the origin of the dead mouse by walking throughout your home and smelling the air.
This is often right against the drywall ceiling so the smell seeps down into the house and creates a strong odor within.
It s not a pleasant or enjoyable task by any means but the odor will be stronger around the mouse.
While it s true that not all the rodents in the attic will eat the poison and die several will and they die in your attic or walls.
You can use a blacklight to see the mouse urine at night which can help you find popular entry points.
Due to the pungent smell it s likely that even after removing the decaying rodent there will be remnants of the overpowering musty smell in the air.
Once inside a mouse can scurry though any part of the architecture the walls the ceiling and get into the attic where they like to live and nest.
So i have some work to do.
Even though the smell attracts vultures and other creatures that gravitate toward corpses it s repulsive to humans.