A Reddit thought, I will share with you. So imagine you just killed a giant spider in your house. Then a few days later you find another one and kill it. What if the second spider, was sent in to find the first spider that you killed? Now that you've killed the second spider, a third is going to come looking for the second and the first. Chances are you are going to kill the third one, which leads to a fourth one. You, unaware that the spiders are only there searching for their lost brothers, continue to kill the spiders. Unknowingly you have created a never ending cycle of search parties. All you have to do to end it, is catch the little guy and put him back outside with his friends. Due to your fear of spiders, we all know this will never happen. Think about it. It's your fault there are spiders in your house. You spider killing monster.