Have you ever spotted tiny, dark bits here and there, especially near where you keep your snacks or hidden in the corners of your kitchen? It’s likely that mice have made themselves unwelcome guests in your space.

Mouse droppings are granular, black when fresh, and dark-brown after some time. Much older droppings are grey and will crumble easily. They are 3-6mm long or about as long as a single grain of rice.

The thought of a mice infestation in your house is scary. Anyone who sees mouse droppings in their house will do everything to rid their home of the mice.


What To Do When You See Mouse Droppings

When you see mouse droppings in your home, you may want to sweep them away immediately. Don’t.

Sweeping or vacuuming the droppings can spread disease-causing pathogens.

According to the CDC, this is what you should do when you see mouse droppings in your home:

  • Allow for air circulation in the space for up to 30 minutes.
  • Wear protective gear when dealing with mouse droppings. Latex or rubber gloves and a mask or respirator are the most important protective gear you need. Never touch mouse droppings with your bare hands.
  • Using a homemade disinfectant, soak the area for five minutes. You can make the disinfectant by mixing bleach with water.
  • Clean with disposable rags
  • Place the dirt in a sealed trash bag and throw it away.
  • Wash your hands with soap and water after removing
  • Disinfect any items that may have come into contact with the droppings.
  • Mop floors and clean the countertops with the disinfectant.
  • Steam clean infested furniture.
  • Inspect the area and seal any mice entry points you find.
  • Clean the area regularly and keep away food that may attract the mice.
  • Declutter your home to provide fewer hiding spaces for mice.

Do Mice Droppings Spread Disease

Yes, they do. Mouse droppings and urine are likely to carry viruses and bacteria that cause diseases.

Here are some of the diseases that mice droppings cause.

  • Hantavirus
  • Salmonellosis
  • Tularemia
  • Hemorrhagic fever
  • Lymphocytic Chorio-meningitis.

Hantavirus is the most common disease spread by mouse droppings. Its symptoms are fever, fatigue, muscle pains, chains, diarrhea, and other stomach problems.

Does Mouse Poop Smell

A single mouse will leave about 50-75 droppings on the floor daily without leaving a smell. However, their urine has a distinctive ammonia smell.

Mice use their urine to communicate with other mice as they have a strong sense of smell.

How To Identify When You Have A Mouse Infestation

Here is how to identify a mouse infestation in your home.

  • Mouse droppings. They are the first thing you will see when you have a mouse infestation. They will be in your pantry, garage, kitchen, furniture, and anywhere in the house they can find food and a nesting area.
  • Squeaking sounds. Mice make squeaking sounds. You will hear these squeaking sounds in your furniture, ceiling, and dark corners where the mice are nested. Mice live in a family. When you spot mouse droppings, you already have several mice in your home.
  • Nesting materials. When they find a space to set up their nest in your home, mice want to be comfortable. They will carry away small pieces of fabric, paper, or your home insulation. When you notice small tears in clothes, newspapers, magazines, or insulation, it is a sign that you may have a mice infestation.
  • Mice. They are nocturnal, and you may spot them if you stay up late. You may also see them during the day as they run across your home looking for food. Mice have grey fur, long tails, pointed noses, beady black eyes, and rounded ears.
  • Gnaw marks. Mice have rapidly growing teeth. They will gnaw at anything to file their teeth. Gnaw marks in odd corners, food containers, drywall, and wooden rafters are a sign of a mouse infestation in your home.
  • Musky smell. Mice smell. It could also be the smell of mice’s urine in your home.

How To Rid Your Home Of A Mice Infestation

  • Use mouse traps. You can use snap traps or glue boards to trap mice in your house. Set up mice traps away from children and pets. Make sure to set up your traps in areas you have spotted the mice. Additionally, use more than one trap to clear up an infestation quickly.
  • Seal any entry points. Mice have flexible bodies and can get through minute cracks and openings. Make sure to seal any in your home to keep them out. Cover plastics and wires that they can chew on to gain entry into your home. Also, cover pipes and cable running along your walls.
  • Clean your dishes as soon as you finish eating. It limits food sources for the mice. Store your food and pet food in airtight containers. Ensure that mice cannot access any food in your house. It will keep them away from your home.
  • Take out your trash regularly. Do not allow your trash to pile up inside or outside your home. Keep all trash can lids closed.
  • If you use firewood, stack it far away from your house.
  • Declutter your home and its surroundings. Keep your home clean at all times. Cut the grass and trim the bushes and trees around your home. Mice hide in the falling leaves and growing grass. They can also use tall trees around your home as an entry point to the attic and into your home.
  • Fix all leaky pipes and faucets to ensure that mice do not use your home as a source of water and food.
  • Pest control professionals can help you get rid of an infestation and ensure that the mice will never infest your home again.

Hire A Pest Control Professional

Private Exterminator is a tool that connects homeowners to pest control professionals fast and free.

At the top of the page, enter your zip code.

Then, provide more information on the mice infestation in your home in the form.

You will then receive three quotes and advice from licensed pest control pros near you.


You will find mouse droppings in kitchen cabinets and your pantry. You can also find mouse droppings in the bathroom cabinets, garage, and under furniture. Your attic and crawl space are also common hiding spaces for mice and, they will leave droppings here. You will also find mouse droppings in open pipes, air vents, and leaking faucets.

Mice are omnivorous. They eat grains, seeds, and meat.

They will also eat your leftover foods and pet foods. For this reason, ensure that you keep all your uncooked food in tightly shut containers. Additionally, do not pile your sink with dirty dishes. It will become a food source for mice in your home. Close trash cans tightly to prevent them from becoming a source of food for mice.

You can use droppings to differentiate between rats and mice. Droppings from both rats and mice are the same color. However, droppings from mice are small and sharper on the ends. Rat droppings are longer and more rounded than mouse droppings. However, mice produce more droppings than rats.

You can also differentiate between the two based on the color of their fur. Rats are brownish, while mice are grey. Rats are also longer than mice. Rats have thinner tails, and they often leave grease marks wherever they pass through.

Difference between rat and mice

Scott Williams
Author: Scott Williams - Scott is a pest control expert and has worked in the industry for over 20 years, most recently in NYC, where he runs a pest control business. Scott loves to write articles, share his knowledge on exterminator services, and advise on safe DIY method.