House mouse

Mus musculus

House mice seek food and shelter in homes and commercial premises. Look beyond the animal itself: droppings, gnawed packaging and gaps around pipes can help identify the cause.

House mouse with a pointed snout and large ears
House mouse — compare several features for reliable identification.

Identifying house mice

The house mouse is small, with relatively large ears, a pointed snout and a thin tail. Its fur is usually grey-brown. A shrew has a noticeably more pointed snout and is an insectivore, not a rodent.

Rustling alone does not prove a mouse problem. Look for several signs and record where and when you find them.

Where do mice live, and what signs do they leave?

Stored supplies, cavities behind kitchen cabinets and pipe penetrations provide food or shelter. Droppings, gnaw marks and damaged packaging warrant further investigation. A single sighting does not indicate how many animals are present.

Also check the outside of the building: gaps around doors and pipes can provide access. Photograph signs before cleaning.

What can you safely do yourself?

Store food and animal feed in sturdy, sealed containers. Clear away crumbs and waste, and check entry routes. Have structural defects repaired without blocking ventilation openings.

Do not touch droppings with bare hands. Avoid stirring up dust from droppings; follow reliable cleaning guidance. Do not use poison at your own discretion. If signs recur, have the species, source and appropriate approach assessed.

Frequently asked questions

Not necessarily. A single sighting does not establish the scale of a problem. Recurring fresh signs provide stronger grounds for an inspection.

It makes the location less attractive, but an open entry route or hiding place may remain. Combine hygiene with checks of the building.

Sources and further information

General information, not a diagnosis for your location. Have the species identified if in doubt. Consult a healthcare professional about health symptoms and do not use pesticides without appropriate instructions.

Further reading

Help for your business

RBL Services helps business clients in Noord-Holland, Utrecht, Zuid-Holland and Flevoland. Discuss an inspection for your business premises, kitchen, production site or homeowners’ association.

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