Top Indications of a Mice Infestation

Ever wonder where those squeaks and scratches during night time come from? It might be a sign that a house mouse is in your home. These small rodents can quickly infest your area if you don’t act on their invasion immediately.

Saying this is easy, but before anything can be done homeowners should know the first warning signs that their house is about to have a mice infestation problem. These pests are most active after the sun goes down where they come out in the open to search for food and move around.

This is why we can somehow associate the unfamiliar sound or smell to the rodent living in your lot. You might think that a single house mouse scurrying around your house is a problem you can ignore. However,it should be alarming enough to know that with the nature of these rodents they can proliferate in a matter of weeks without you even noticing. Thus, you have to be vigilant so you could avoid a mice infestation.

Vigilance is one thing, but you must know what to look out for so your search is focused and accurate. For owners, the typical house mouse leaves trails that indicate they’re currently residing inside you building.

Mice Poo

Image result for mice poop

A house mouse keeps its food and consumes it little by little and because of that they defecate a whole lot throughout the course of a night. With their irregular eating habit, fecal matter can be spread around your home. Their waste is dark-colored and tiny which is easy to spot if you see it.

An active mouse nest would drop a lot of fresh waste which is also a sign of an early infestation. If you’re not entirely sure that the poo was excreted recently, you still proceed to clean-up duties and sanitation but you have to remember the area where you found the droppings. The day after, you must come back to the place and see if there are new mice feces and if you find some then you can conclude that they’re fresh and your house has been invaded by mice.

A house mouse explores areas where the smell of food is prominent, which means that their feces can be also found in the same parts of your home. You first check for poo in areas like cupboards and walls near food areas.

Mouse Markings

The humid and dirty environment that mice live in causes their hair to be wrapped with oil. This becomes grease marks when they run around looking for food through the usual passageways that they take. They move by squeezing through holes and staying near walls which makes their hairs rub on these surfaces leaving visible stains.

A house that has a lot of mice living inside may have a lot of urine pillars. These are marks made from urine, grease, dirt, and other materials found in their hairs. Such materials get caught on their hair because they live close to each other and on top of their waste. But before you conclude a heavy infestation, you must look at other signs because a grease mark that gets rubbed constantly by the same mouse may create a urine pillar as well.

Unfamiliar Sounds

A house mouse is a very careful creature and by that i mean it checks its area diligently. They do this through the use of their senses except their eyes because it is weak when compared to others.

All throughout the night, mice explore and stay active. Their activity involves scratching surfaces like wood and cement to investigate the area and while they’re searching for leftovers. If you hear scratching sounds late at night, then it is safe to assume that a mouse is causing that.

Flexibility and agility allows a mouse to move around and in between cracks on walls. When they get to these areas they continue to move and make sounds which explains why you hear irritating sounds coming from the inside of your wall or ceiling.


Image result for Mouse NestingSeeing a mouse moving around your house may be a sign of an infestation because they generally live as families with a nesting area. The quickness of the house mouse allows them to move around and collect materials to build their nests on a certain spot in your home. Mice can build their nests anywhere but usually these animals prefer a place that is quiet and strategically placed where they can collect food faster.

Water isn’t too much of an issue for these creatures because the liquid inside the food they eat is usually enough for them to survive the day. If they do feel thirsty, mice only consume as much as 3 milliliters of water and they’re good for that day.

The hollow parts of walls, ceilings, floors are the most common nesting spots. Some mice are bolder where they build their nests under the refrigerator, stove tops, and even the cupboard.

If you find their nests, you can see that the materials they use to build it usually mimics their natural habitat as if they were living in the wild. Tree products are usually the materials they bring in. For example, papers, cloth, and cardboards.

Once they have built their nest and the conditions are just right for them to thrive, their population can shoot up quickly without you noticing. One litter can have as many as 8 mouse pups which adds to 10 mice per litter on average. It can grow out of proportion if the owner doesn’t make the necessary moves to stop it.

Mouse Tracks

Image result for Mouse Tracks

A house mouse when active can leave footprints and when you trace these tracks


you may be led to their nest or one of their route. To make it visible, you can try and shine some light on a spot that you think mice have been travelling through and if you see little footprints then that is it. Mouse tracks don’t get wiped off easily. In fact, they may stay there for a couple of months which means it would be difficult to know if they’re fresh tracks or not. If you want to know exactly how fresh some of the tracks you found are, applying talcum powder on the spot might help. Spread it over the route you suspect mice are taking and observe if it reveals new tracks the next day.

Visible Evidence

“To see is to believe”, a common saying that applies to a mice infestation. Mice that are freely moving in your kitchen or just outside your house is a warning sign that they’re currently living within your lot.

In the case where you see a house mouse during a sunny day, then you should consider taking aggressive measures to get rid of these mice because a sight like that clearly indicates an infestation. A mouse will not abandon its nocturnal nature to forage for food unless they’re forced to do so because of the heavy competition for food in their area. You would be lucky if their nest had just been damaged or somehow experienced a disturbance that pushed them to move around.

Awful Smell

Along with the aforementioned signs above, if you get awful smells that are clearly coming from urine and feces then you clearly have a bad mice infestation. Traces of their strong smell are left as they move around your house particularly near their nesting areas. The stronger the odor the nearer you are to either their nest or where they move around.

Final Take

There are a lot of things you have to check to confirm a mice infestation or to prevent it to go from one mouse to several nests. Narrow down your search from the information you’ve got above. One by one check for each clue and make an evaluation.

Mice infestations can easily go out of hand for every single day that you ignore them. They also pose high health risks for the humans and pets living inside the house. Urgency is crucial in addressing these seemingly obnoxious traces of house mouse in your place. To ensure full recovery of the house from the infestation, it is best to coordinate with a pest control firm for a massive house sanitation. This can be inconvenient at first, but this is also a sure way to prevent another round of mice infestation.