I try not to kill spiders if I can help it. Just the other day I was just chilling out and felt a tickling sensation on my arm. A scratch didn't solve the problem so a glance showed that the was a fairly small spider crawling along my arm. I brushed it off on the carpet where it nonchalantly wandered off along the floor. Wanting to share my flat with as few insects and arachnids as humanly possible, I picked it up in a cup and chucked it out of the window.