Consider the following: The spiders have likely been in your house since it was still under construction.
The spiders are obviously very harmless house spiders.
The cobwebs and egg sacs could well be very old and abandoned.(unless you see a spider in the webs.)
What this means is you now see evidence of their presence, and there may well be many more in such hidden places about the house.
Now, after 12 years, they have never been a problem, why would they be a problem now that you are aware of them.
Having spiders about only means one thing, there are also insects they are feeding on like termites, silverfish, earwigs, beetles, and cockroaches.
If you don't seem to have a bug problem, it also means the spiders have been doing a good job of exterminating the pest insects.
After 12 years of ignoring the spiders, surely you could just continue to ignore them.
Routine cleaning will rid messy webs where they are an eyesore, but that is the spiders worst.
I have had spiders about for over 50 years, as many, if not more than you deal with, and save for a cockroach now and then and a few crickets in the summer, no bug problems,and not one of the spiders has ever been a nuisance or problem.
Here is a little cobweb spider I found under my fuse box.I named her Cassi,(Cassiopeia) and just leave her be:
They've likely laid eggs in all your clothing also.
Today i was suppose to be going to a wedding and couldnt find my camera charger and so i grabbed the flashlight and decided to look under my antique dress and when i got on the floor and looked COBWEBS AND SPIDER EGGS GALORE i am a wreck im so paranoid now there has been seldom times ive seen a spider in my house ive lived in my house since i was 4 im 16 what does this mean ? do we have a spider problem please help !!!!!IM GOING INSANE
