7 Signs of a Mouse Infestation

Do I Have a Mouse Infestation?

You might think that a mouse infestation would be easy to spot, but that is not necessarily the case. Mice are small and quick, and they are very good at hiding. If you do spot a mouse in your house or garage, you can be fairly sure an infestation is already underway, but you could have a problem with mice even if you never see one of the four-legged pests.

If you suspect that mice have entered your home or property, staying alert for these classic signs can help you know for sure.

Strange Odor

You notice a strange odor in your home. A mouse infestation comes with a distinctive smell. If you have dealt with mice in your home before, you will recognize it right away. A faint ammonia odor is the most noticeable symptom. The smell may get stronger over time as the mouse population increases.

Damage to Furniture and Wiring

You see hidden damage to furniture and wiring. Look carefully when vacuuming behind the couch. Stuffing pulled from the back of a sofa or bite marks on hidden power cords is often the first visible sign of a mouse infestation.

Mice Droppings

You notice mouse droppings in a drawer or on the floor. If you have mouse droppings in your home, you have a mouse infestation. Do not fool yourself or think that there is only a single mouse present. Just call an exterminator and deal with the problem before it gets out of hand.

Dirty Smudges

You have trouble keeping your trim clean. Mice tend to run along the sides of rooms, and they generally stick to the same path. Dirty smudges along the perimeter of the room could be caused by mice moving from one place to another while you sleep.

Scratching Noises at Night

You hear scratching noises at night. You will probably hear your mice before you see them. Unexplained scratching noises in the walls is a classic sign of a mouse infestation. Check the area for signs of mouse damage, like chew marks and droppings, then call an exterminator.


Mice will shred materials such as paper and string to build their nests indoors.

Change in Pets Behavior

Our pets certainly know when something is not right. They can smell and hear the little pests in the house. They may bark and stick their noses in areas beneath the refrigerator, in the stove cracks between the kitchen cabinets, under furniture and in other tight spots.

If you spot any of the following signs, you need to call a professional pest control company right away. Mice breed very quickly, and a small infestation can turn into an overwhelming one in a surprisingly short period of time.

NJ Pest is here to help you. We are experts in the removal of a mouse infestation problem and any other unwanted pests that may have made your home their home. Contact us today to set up a consultation. Our exterminator experts are happy to help you.