I ventured under my 120 year old house to make a couple Ethernet runs. It took a lot of meditation on my part to bear doing it. On one run, I needed my wife to pull on a fish line from above, but then she had to feed the baby, and so I watched an episode of star trek on my phone for half an hour while wedged between wood stilts.

6 months later, I got a notice that the cable I used was recalled for a bad UL rating. Monoprice had to pay a contractor had to come out and replace it. When coordinating the work, I warned the company that it was a very dirty job that would require two people. They sent an older guy out all alone, and he poked around for half an hour then left, saying he would come back with PPE and a helper. A couple weeks later the same guy came back alone and unprepared again. Finally the third time he came back with a much younger guy and bunny suits, and they redid the runs.

I had stapled the cables up every couple meters, and followed a Manhattan path based on where I could crawl to. they just fished it in a straight line, and left it resting in the dirt. They presumably billed Monoprice several thousand dollars...