I had predicted the return of the spiders, and a week later I found a huge spotted one crawling by my back door. I sprayed it with spider killer poison for a good 30 seconds straight, but it was still alive. I was forced to squish it with paper towels, and there was a lot of screaming involved.
I'm now armed with plenty of spider killer. I really really really really hope that the bug barrier is effective. Its auto trigger is battery powered, which is completely unnecessary as the stream of poison is too powerful and ricochets back at me. I guess this means I'm spider-proof, too.