What kind of creatures are these? And where do they come from?

Hello everyone,

we have little creatures in our house. Does anyone know what kind they are and, above all, what the cause is?

The source must be in the basement, as there are the most there. On the ground floor only very few, and so far none upstairs.

What can we do about it?


Thank you in advance

Take better pictures, they are blurry, you can't see anything when zooming in

That might possibly be a cockroach. However, it is difficult to determine from the blurry images. Either a small species or freshly hatched.

Unfortunately, the phone camera can't take better pictures. The creatures are actually very, very small.

Have and had them on the walls too.
Do they jump for you too when you get close to them with your fingers?

They may be dust mites, how large are they approximately?