Having a mouse in your house is annoying (and gross, if we’re being honest), but beyond that, you are also at risk of the mouse spreading bacteria and disease in your home. 

Are you hearing things at night? Finding suspicious droppings or smelling a foul smell in your home? These could all be signs of a mouse infestation in your home. 

If you notice any of these signs of mice, you need to take action quickly, before the mouse population grows. Read on to learn more about the signs you shouldn’t ignore. 


Mouse leave their droppings anywhere that they travel, and they excrete 50 to 80 droppings a night. These look like small, black rice grains and you may find them in large quantities where the mice are finding food, such as in your pantry, or where they are entering your home, such as underneath a sink or along the wall. 

It’s important to take safety precautions when cleaning up these droppings. Wear protective gloves when cleaning them and don’t sweep or vacuum the droppings. You can read more here about safely cleaning up after mice.

Teeth Marks

Mice have teeth that grow constantly and they have to gnaw on things to wear them down, similar to the hamsters you may have had as a pet. If you find teeth marks on wood furniture, cords, plastic, or electrical cables, you may have a problem. While this is an inconvenience, it’s also dangerous, as chewing through wires could cause electrical fires and damaged equipment.

Foul Smell 

Mice have a very distinctive smell that is much like stale urine. In closed areas, such as pantries, cabinets, or drawers, the smell may be more noticeable. The stronger the smell, the closer you are to the mice infestation area. 

Pets like dogs and cats also may be attracted to these areas. If you see your pets unusually interested in an area they had ignored before, you may want to consider checking for signs of mice in that space. 


Mice tend to run along walls and take the same paths each night when they are out and about. As they are active night after night, the dirt on their feet and body will begin to leave streaks on your floors or baseboards. Droppings and traces of urine can also be found along their runway. 

Strange Noises at Night 

Mice are nocturnal and are usually out of sight during the day. In fact, if you seem them during the day, it may mean that you have a large infestation. If you hear scurrying and scratching noises at night, in the walls, or in your home, you likely have rodents taking up residence. 

Missing Food 

Mice like foods such as crackers, cereal, nuts, grains, candy, and even dog and cat food. They also like high-fat food, such as cheese and peanut butter, which is why these foods are often used in mouse traps. 

If you notice teeth marks in your food, boxes or bags that are chewed open, or other signs of a mouse in your pantry, such as droppings, it’s time to take action. 

Don’t Ignore These Signs of a Mouse Infestation

If you have any of these signs of a mouse infestation in your home, you need to take action immediately to prevent the mice from spreading disease or bacteria and prevent them from multiplying. Whether you choose a trap, poison, or another method will depend on how many mice you have and whether you have pets or children. 

If you found these tips useful, be sure to check out some of our other articles before you go. 

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