We could live without spiders

Why spiders like to come into the house

Although useful, spiders make many people feel disgusted, especially when they're fat and hairy. The eight-legged friends are not particularly welcome in the house, but their intrusion cannot be prevented. The best way to get rid of them.

Around 1,000 species of spiders live in Germany. A third of them live in houses. Originally they lived in stone walls, under tree roots or in quarries. Little by little they have adapted to the human habitat. Other species have immigrated from the Mediterranean. These cannot survive at all in the climatic conditions outside. Therefore, they only occur in houses.

Big angle spider is hairy but not dangerous

Often people don't even notice their hairy roommates. Because spiders like to retreat to dark corners and are mostly active at night. Almost all native species are completely harmless, including the dark, thick and hairy Great Angle Spider. Some specimens have a body 16 millimeters in size, which corresponds to a cent coin. The legs also have a span of up to ten centimeters. Like its somewhat smaller relative, the house spider, the large eight-legged friend feels at home in damp apartments, sheds and cellars. They have adapted to the living space of the house, explains the German Animal Welfare Association.

Nobody has to be afraid of it: even if the great angle spider can bite, its mouthparts do not penetrate human skin. Normally it doesn't bite people but eats mosquitoes, small flies or woodlice - and can even be useful.

Don't suck up spiders

If you are not afraid of spiders, you can safely leave the animals where they are. If they disturb you, you'd better put them outside instead of killing them, says the German Animal Welfare Association. This works best with the tried and tested cup method: you put a glass over the spider, slide a piece of cardboard under the edge of the glass and carry the animal out. For those who do not want to get that close to the spider, there are so-called spider catchers. These are long-handled fishing gear that can be used to keep them at a distance. The vacuum cleaner, on the other hand, is not a good idea: vacuuming is particularly painful for the animals.

Spider in a jar: The easiest way to catch spiders is to use a jar and then bring them outside. (Source: dpa)

Expose spiders far away

If you want to make sure that the evacuated roommate does not come back, you should put him out a little away, for example in a pile of wood. The distance should be at least 60 to 70 meters, because once you have felt comfortable in a place, you usually come back quickly, according to the Naturschutzbund Deutschland (Nabu).

The quiver spider is not a harvester

The trembling spider is also often found in apartments. The filigree eight-legged man is often confused with the harvestman. Unlike the latter, the trembling spider has a two-part body. In addition, the harvester tends to live outside, while the trembling spider is mostly in apartments and basements. With its small torso and long, thin legs, it looks less terrifying than the angle spider.

On the other hand, order-loving people are annoyed by their large-area nets on the ceilings and in corners. They have little in common with the ornate structures such as the garden spider. If you lightly tap the spider sitting in the web, you will also learn where it got its name from: As soon as it feels disturbed, the trembling spider swings violently back and forth. With this trembling movement it tries to distract predators.

Spiders don't build a web

In addition to the angle spiders and the trembling spiders, one encounters, for example, the fat spider in apartments. At around five millimeters, it is significantly smaller than the angle spider and recognizable by its round, strongly shiny abdomen. The food spider, on the other hand, has a high-contrast pattern and is sometimes found in bathrooms. The peculiarity of food spiders is that they do not build nets, but catch their prey by spitting on it.

The number of spiders in the house is limited

The fear that there might be too many spiders in the house is unfounded, by the way. Spiders are cannibals that regulate their number by themselves. From an ecological point of view, spiders are part of a food web: while they eat smaller insects, they in turn serve as food for birds and bats.

From this perspective, too, relocating to the garden makes sense. However, it is doubtful that spiders see it the same way.