When mice day and their bodies start to decay, they give off a strong and unpleasant odour. Anyone who has ever dealt with dead mice following an infestation will recognise this smell all too well. If mice die within wall cavities or other places where homeowners are likely to find them, most people will first be alerted to their presence by the foul stench of decay. The smell will also linger for some time after the mouse carcass is disposed of. For households with pets, this can create problems; cats and dogs tend to behave strangely when they think they can smell a rodent.
Getting rid of the smell of dead mice can be difficult if they die somewhere inaccessible. But regardless of where they die, there are things you can do to reduce the odour or make it less noticeable until it clears.
The first thing you will want to do is get your hands on the most potent disinfectant you can. Fully disinfecting the affected area is an essential part of the process. Make sure that the area is well-ventilated before you start disinfecting to avoid the build-up of harmful fumes.
If you can access the area where the dead mouse or mice were, spray it directly and scrub it as well as you can. Carpets, rugs, and other fabrics will hold smells much longer than other surfaces and are more difficult to clean. If you can remove them and wash them at a high temperature, this is the best way of eliminating any lingering smells.
In cases where the mice die and rot somewhere completely inaccessible, all you can do is wait out the smell. Air fresheners, scented candles, and incense can all help to make the stench less noticeable. Keeping the area well ventilated will also help.