Just bite the bullet and crawl under the house or in the attic. I have done it many times it's not the end of the world. The most annoying is to go through fir

Just bite the bullet and crawl under the house or in the attic. I have done it many times it's not the end of the world. The most annoying is to go through fire blocks in the walls. Because this requires you to open up and patch the drywall at 1.5m height if you bring the cable from the attic. From the crawlspace the hardest part is to make sure you drill inside the wall, not through the floor! For that I found that somebody with a powerful magnet in the house while you carry metal washers with you under is helpful to locate precisely the walls. You can often see the nails holding the floor plate as well to fine tune the location. I recommend a good respirator mask, and a jumpsuit to retain some psychological distance with the spiders.