There is no need to kill a spider, even if it is chez vous. There are many ways of dealing with it without squishing it. The best thing to do is to trap the creature and release it. You don’t need any special equipment – just a glass and a piece of card. Place the glass carefully over the spider, making sure you do not crush any legs and slide the card underneath. All you have to do is take it out into the garden and release it.