Insect and Spider Identification: CLOSED: Neon green spiderlings, with hatchery, 0 by ousiibii

ousiibii wrote:
I just discovered this hatchery on the side of the window on the upper floor of my house.
When trying to remove it, a lot of baby spiders fell out of this mud hatchery, as you can see in the lower part of the picture.
There are four 'tubes' that make the hatchery, and the middle two ones had incapacitated and dead bugs whose purpose seems to be food for the... babies.

Sorry everyone, but I had to use Raid on the hatchery and spiders because the threatening toxic color and their numbers scared the living peep out of me :(

I live in a rural area but have never seen spiders like these, especially the ones that will climb an entire floor of a house in order to create a mud hatchery, so I'm interested in finding out if they're something to be worried about.

I'm from the south of Croatia, Europe.

Thanks in advance!