Mice in the house, in the apartment or the attic?

Suspected mice in the house? At the latest, when you hear scratching and scratching noises in the attic or the false ceiling, find tattered materials or alleged mouse droppings, increased vigilance is required. Mice are masters of the game of hide-and-seek and usually hide near people during the day. For this reason, mice are often discovered late in the home.

Find out everything about the typical symptoms of a mouse infestation and learn to correctly interpret initial signs such as mouse droppings. It is also essential to know which specific hiding places in the vicinity of the house, apartment or garden are preferred by mice.

If you discover you have a mouse problem, don’t waste any time because: Mice are dangerous hygiene and health pests that transmit diseases and Damage to inventories and arrange materials. Protect your family and pets and leave mice in the house or apartment immediately fight.

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Signs of mice in the house

No two mouse infestations are the same. However, there are unmistakable signs that suggest mice are around the house. To determine this, it is first essential to carry out a thorough inspection in the area around the house, apartment or garden, since even with a severe mouse infestation, one rarely sees living mice unless the mice feel disturbed in the size of ​​the nesting place, it is Food scarcity or very high infestation pressure.

Therefore, it is essential to pay attention to clear signs and traces such as mouse droppings, gnaw marks, mouse nests, dead mice, walking tracks, etc.

Mouse droppings

Mouse droppings are one of the most typical symptoms of a mouse infestation. In the beginning, mostly only sporadically, later increased, you will find mouse droppings on mice’s walking and walking paths inside and outside the building. Mouse faeces are spindle-shaped or circular segment-shaped faeces about 3-8 mm in size. House mice produce around 60-80 of these faecal pills a day. If you find faeces of different sizes, this can indicate that mice are multiplying in this area.

Since mouse droppings are relatively small, you should look carefully. A supposed bundle of fluff has often turned out to be mouse droppings. If the consistency of the mouse droppings is soft and shiny, this indicates an active infestation.

Gnaw marks


One of the essential infestation features in mice are gnawing traces, as they gnaw all conceivable materials due to their innate gnawing instinct. This creates typical bite patterns or scuff marks, mainly in two parallel, deepened grooves. 1-2 mm apart.

Mice in the house prefer to gnaw on electrical cables and are therefore responsible for a series of massive electrical damage and house fires. Mice in the garden often tamper with the sacks of recyclable materials stored there, whereas mice in the apartment leave behind damage to furnishings, textiles, cables, newspaper, files and paper. In addition to mouse droppings, gnawing marks are one of the most important signs of a mouse infestation.

Smear marks


Mice in the house often use the same walking routes. The fur of the mice repeatedly comes into contact with the floor and wall surfaces that have been walked on. The result: body fat and dirt particles form what is known as smear marks, which are characteristic of a mouse infestation.

If you have mice in the apartment and follow these smear marks, they often lead straight to hiding places, mouse nests and sources of food. Smear marks are, therefore – in addition to mouse excrement and gnaw marks – an essential indicator of an acute infestation and mice in the house.

Mouse nests

Mice in the house create an almost unlimited number of nests. A quiet corner is sufficient for mice. If the food source is close to their nest, the range of motion of mice is severely restricted.

Since mice can climb very well, the nests are practically everywhere conceivable.

Once mice have settled in the house, they spread via pipes, cable ducts and wall openings and like to build their nests in false ceilings, hollow walls, in the attic and other places. Mice use all hay-like or paper-like materials as nesting material, lined with textile fibres, fillers, insulating materials, or body hair. Mice give birth to 4-8 young per litter with approx. 4-6 litters annually. The reproduction rate in mice, including children and children’s children, is around 2,000 offspring per year under suitable environmental conditions. Mouse nests are also often characterised by high levels of mouse droppings.

Running tracks

In very dusty areas within buildings, mice can also give themselves away through their tracks. This is how mice leave their typical footprints in the basement or the attic. The size and shape of prints enable the species of rodent to be determined. Mice tend to opposed brown rats; for example, they do not have to walk on the balls of their feet. In addition, mouse footprints are much smaller. If you want to check whether you have mice in the house, you can sprinkle flour and check accordingly for impressions the next day.

Mice in the garden are primarily Voles that live in earthworks and destroy the vegetation in the park through their tunnels and root damage.

Dead and living animals

The most apparent evidence of a mouse infestation is – besides fresh mouse excrement – the sighting of living mice in the apartment or the garden. The discovery of recently deceased mice is also evidence of an acute infestation and, at the same time, enables the exact determination of the mouse type. If mice are found living in the house or garden during the day, this indicates too little food, disturbance of the nesting sites or extreme mouse infestation.

dead miceStrong smell

Mice infestation produces a very unpleasant, characteristic odour that is particularly pronounced in closed areas within the house or apartment and is mainly caused by mouse urine. The smell is used by mice within their species for orientation, as the scent marks walking routes, delimits territories, and the so-called group odour characterises their own family. If the typical mouse smell is perceived, this usually indicates a more substantial infestation.

Yes, I have a mouse infestation. What now?

Have you read the traces correctly, and are you sure that there are mice in the house or mice in the apartment? Do not hesitate, even if mice are “only” in the garden, because it is usually only a matter of time before mice penetrate the interior of the building, as they know how to use every hole in the wall, every crack and every gap. Mice squeeze their way through pencil-thick holes 6-7 mm, run up vertical walls and jump 20-30 cm high.

Fight mice now!

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Rely on a team of experts who are always ready to answer your questions and offer you an incomparable quality of work while respecting your privacy and ensuring your safety. We strive to satisfy you in every way. Speed, efficiency and security are our keywords.

AAA Termites and Pest Control, which has been involved in pest control for over 90 years, support you in the event of a mouse infestation in your home in the shortest possible time. Only professional treatment, such as that proposed by us, guarantees the complete and definitive elimination of this pest.