How Long Does Dead Mouse Smell Last?

In a situation where a mouse, unfortunately, dies in your home, not knowing how long does dead mouse smell last could give your home an awful smell making it unbearable to stay.

The dead mouse smell is really hard to miss because the stench is very offensive, the smell can be very upsetting especially if you can not find where the smell is coming from or the mouse died behind a wall, making it very hard to get it out, so you are wondering how long you can bear the offensive stench.

You should know that the smell of a dead mouse can be harmful to the respiratory system so inhaling it for a long time is not advisable. In this article, I’ll explain, what a dead mouse really smells like, How long a dead mouse smell last, how to get rid of a dead mouse smell, and how to prevent mice from entering your house.


What Does Dead Mouse Smell Like?

At first, a dead mouse can have the smell of rotten eggs and sulfur, as it begins to decompose, you can perceive a strong urine-like smell, it could also smell like a decayed pile of rubbish.

Scientifically, a dead mouse smell like a combo of sulfur dioxide, methane, benzene derivates, and a long chain of hydrocarbons. Literally, this means that the smell is very offensive and really choking with lots of harmful toxins and gases.

How Long Does Dead Mouse Smell Last

Read alsoField Mouse Vs House Mouse: Facts, Similarities, and Differences


How Long Does Dead Mouse Smell Last?

Answering this query how long does dead mouse smell last? The longevity of a dead mouse’s smell depends on the size of the mouse. If the dead mouse is a baby mouse, the smell will disappear within 3-4 days, this is because the mouse is small and is not matured, the mouse has probably not had much to eat so the body dries up fast making the smell go away.

If the dead mouse is an adult mouse, the stench could be in the area for about 3 weeks to a month, this is because it takes a longer time for the body of an adult mouse to dry off. If the mouse died in your house, the smell might take a long time to wear. If you have a strong sense of smell, you could still perceive the stench of the dead mouse for over two months.


Read also: Rats vs Mice: How to Control Infestation


How to Get Rid of Dead Mouse Smell

To get rid of a dead mouse smell you should:

  1. Try and locate the dead mouse and remove it, removing the dead mouse from the place will get rid of the smell very fast.
  2. After removing the dead mouse, pour disinfectant bleach where the carcass was and then flush the area with enough water to get rid of the stench.
  3. You can pour vinegar in the area of the odor, vinegar will reduce the stench from the area of odor. even if you are not sure where the odor is really coming from, just pour vinegar around, it will reduce the smell of the dead mouse.
  4. Baking soda also helps, mix baking soda with water and put it in a spray bottle, and spray it in the area of the odor, continue spraying daily until the stench disappears. This method is also applicable and can also be used even if you can not locate the dead mouse, just spray it in the area you think the odor is oozing from.
  5. Wash your clothes, this is because your clothes could retain the stench of the dead mouse, so washing your clothes will help get rid of the dead mouse smell.
  6. Sanitize your house with strong disinfectants that have a more desirable fragrance to get rid of the smell.
  7. You can buy odor neutralizing products, these products will help in neutralizing the stench.
  8. Get an air cleaner that has an absorbent Filter. What an absorbent filter does is absorb and remove stench particles through the filter when room air circulates.
  9. Open the windows and doors of your house for a while to allow fresh air to come in, you can leave the windows open for a whole day if you are sure nothing will crawl into your house from the window.


Read also: What Food Do Mice Like? | Mice Diet


How to Prevent Mouse From Entering Your House

To avoid dealing with all the stress of having a dead mouse smell in your house, here are some tips on how to prevent a mouse from entering your house.

  1. Mouses have a very tiny skeleton despite their big body so make sure that there are no tiny holes in the walls of your house because they can fit into a small hole because of their tiny skeleton.
  2. Make sure that there are no openings in the pipes in your house, mouse can enter the house through basically anywhere, so make sure to cover drain pipes which might be their entry point.
  3. As long as a mouse sees food in your house, it will keep coming, you have to make sure to discard all old food, keep your kitchen very clean, take out the trash timely, and keep the trash bag tightly closed.
  4. Keep your surroundings clean and tidy to avoid mice having a place to stay within your environment.
  5. Peppermint oil, clove oil, Eucalyptus oil, Ammonia, Vinegar, Oregano, Cedar leaf, Sage, Black Pepper, and Steel wood can be used to repel mice and prevent mice from entering your house.
  6. You could mix peppermint oil and cedar leaf and spray them around your house, the smell of peppermint and Cedar leaf will not allow mouse come close to your house, you can also mix the other ones, their smell repels mice.



The smell of a dead mouse is very toxic and can last for a long time, I advise that it should not be taken for granted, make sure to get rid of that offensive stench, as quickly as possible. However, we believe you must have known and got the answer to your search query how long does dead mouse smell last?

You can give us a call at +2349063843208 if you can not get rid of the smell of the mouse by yourself and if you are in Nigeria, we will provide on-site professional assistance.

You can send us an email at if you need any professional assistance. Remember to always do a routine check around your house to make sure nothing gets into your house as any dead animal smell is very offensive and bad for your health.

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