If you want to try a natural way you can find some Monkey Balls, sometimes called hedgeapples, hedge balls, horse apples, green brains, monkey balls, or a mock orange. This is a very humane way to handle your mouse and spider problem. The only problem is, I can't always get them.
The method I am going to show you works very, very well. The problem is, It is not a humane way of dealing with mice. It does work and works well for me, so when I can't get Monkey Balls, I use this.
This also keep my neighbors kids and pets from getting into the poison because I can put a lock on this to keep everyone and everything out. Including me if I lose the key.
I do not get mice in my house when I use the Bait Stations. I have 3 of them that I place in strategic places around the outside of the house.
One year, My Hubs and I went on vacation and a family of mice moved into our basement, plus his truck air filter. We couldn't figure out for the longest time why our truck had no power. Here the mice had blocked the whole air filter.
Needless to say, I don't forget to put the bait in the bait station any longer.