Arachnicide?

Last week, sitting in my bedroom, I hear Jensen's voice just outside my door. Speaking to no one in particular but with the excitement of a Christmas morning, she practically squeals, "I just caught my very first spider!"....then a long pause and the same voice, just much more matter of factly. "I had to kill it to catch it, but I caught it."
She had caught it under a jar, she thought she suffocated it because it curled up and stopped moving. As she was putting it outside it sprang to life, startling her and almost REALLY losing it's life then. I think we're about 50/50 here on sparing/killing those eight legged critters. Not very good odds if you're a spider eh? :D