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Signs of Mice Infestation

Last Updated: 05.02.23


If you have a mouse infestation, you might want to stock up on the best mouse poison to get rid of the problem. There are some obvious signs for a mice infestation that you should look out for. You might find chewed furniture, holes in food packages, mouse droppings, or small traces. They also prefer isolated and dark places so you might want to start looking there.


How can you tell it’s a mouse?

It might be difficult to figure out if the rodent living in your house is a mouse or if it is another pest such as a rat. However, there are some clues that you could follow. For example, mouse droppings are smaller.  Also, mice will leave smaller footprints and unlike the rats, they don’t drag their tails so this is a sign to look for.



It’s all about timing

If you are not 100 percent sure there are some mice sharing the house with you and want to see them by yourself, wait until the light fades. Your highest chance to actually see a mouse is at night. It also gives you the opportunity to follow the mouse so you might find their nest. Watch where it runs off to when it feels your threatening presence.


Where to look for mice

Don’t expect your mouse guests to just hang out in the center of the rooms. Generally, they don’t want to run up into you as much as you don’t want to meet up with them. So pay attention to their regular routes. A mouse will usually move along the perimeter of the room so check if there are signs of a mouse infestation.


Signs of mouse presence

Even if mice are small animals, they have an obvious way of signaling their presence once they entered a house. Nevertheless, you must know where to look so you can accurately determine if they have invaded your property so you can adopt the best strategies to get rid of them quickly. 

Always pay close attention to your house for the first signs of a rodent’s presence as mouse infestations can develop at an alarming rate. There are certain times of the year when it is of high importance to watch out for mice.


When they might look for shelter

A mouse’s family might look for a new place to live when the days get colder as they try to escape the low temperatures. So when the fall turns into winter, make sure you don’t leave any temptations for mice around your house.

Throw away any cardboard boxes, clean the leaf piles or any other debris that could serve them as shelter. Also, don’t set up the table for them by leaving pet food or not securing the trash bins. You can move the trash bins farther away from the house to keep them at a safe distance.

Mice might look for a new shelter as the days get hotter. They will try to escape the heat by moving into your basement or inside your storage room. In general, they prefer spaces without a lot of movement so they can explore it freely. If you are a pet lover, having one or two cats will help you keep these little rodents away.



Look for mouse droppings

Mice especially like room’s corners where they might feel safe and usually, they relieve themselves in safe places so there is a high chance you will find some droppings. These small droppings are shaped like a spindle and are about the size of a grain of wheat. 

There is a big chance you have an entire family of mice if the droppings seem to have different sizes. This will indicate not only adults are living in your house, but they have already started to breed. Now, this just became a serious problem since a single female mouse can produce 10 litters of babies in a single year. 

As mice keep exploring your house, you might find their droppings in other places such as inside cabinets, the backs of drawers, or any other hidden place where they might go searching for food. If you notice the droppings are shiny, it means the mice are certainly there. If they appear to be dry and crumble, there is a chance they might have left the house. 


Clean the house quickly

It is of great importance to clean these droppings as quickly as possible as they are full of harmful pathogens. However, don’t sweep them as it will cause particles that could be carrying diseases to float freely around the house. One disease known to be transmitted by mice by becoming airborne is the hantavirus. 

The hantavirus causes symptoms identical to the common flu. If you think you or a member of your family has been affected by the hantavirus, go to the hospital immediately. To avoid anyone in the house getting seriously sick, use a vacuum cleaner to clean the mouse droppings.


If you have leaky pipes

Like every other animal, mice need water to survive. If they can’t find a leaky pipe inside your house, they will use their teeth to chew through the plastic to get to the water. Check if the pipes under the bathtub or kitchen sink got damaged by mice. 


Unexplained tears in fabrics or clothing

In case you find some pieces of clothes’ material missing, there is a chance the mice took it to build their nest. If you have a mouse infestation, you may start observing tore fabric or other materials in isolated parts of the house, especially in dark corners.


Small holes in walls and other areas

Mice don’t need a big hole to enter your home or business. The biggest part of their body is the skull which is as wide as a pen cap so they find a way through pipes or cable holes. However, if they don’t find a hole big enough so they can fit through, they will start chewing on it until it becomes big enough to squeeze in.

After they get inside, they will keep on chewing holes through walls or pieces of furniture. They will keep doing this until they find food and a good place for their nest. Mice can chew on almost anything from wood to electrical wiring. 

If they get inside your walls and start chewing on the electrical wires, there is a probability they could cause a house fire. Even if this will take care of the mice infestation problem, you might want to try other solutions first.



Noises inside the walls or attic

Mice are known for their gnawing, scratching, and scampering noises inside walls or furniture. If you hear some noises on a quiet night, there might be some mice living in your house. However, if you can hear the same noises during the day, it might not be mice making them. Keep in mind – mice are nocturnal creatures.


Gaps in food boxes

Mice are very skilled when it comes to getting into the food storage and they will chew through almost any food package. However, there is a way to better protect your foodstuff against mice or other pests and it does not take a lot of time or effort. Store all food items inside the freezer or refrigerator or place them into airtight plastic containers.


Specific smell

In case of a mouse infestation, you might notice a musky odor or you could even distinguish their urine scent. The strong smell is caused by the pheromones used as a way of communication. Through their urine, mice can tell who belongs to which family and who is in charge. Also, some mice could die inside your walls so you will definitely feel this scent.


Unusual pet behavior

Your pets will act oddly when they hear the mice or feel the mice’s smell in the house. They will seem very alert or begin to paw at places beneath refrigerators or low-clearance pieces of furniture. It’s better to not use mouse poison if you have pets. They could eat the poison themselves or eat a mouse that died because of the poison and the pets will get poisoned too. 


Small footprints

In case you think there are some mice sharing the same space with you but you haven’t seen them yet, you can test their presence. Before going to bed, spill a small amount of powder on the kitchen’s floor or any other room you want. If you find small footprints the next morning, it is now time to call the pest control.



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