How to keep spiders away from my bedroom.?

Okei, well the situation is that I have 2 rooms, both on the third floor, and my house is too big to spray stuff all around it. So, I'm going to focus on keeping spiders away from my 2 bedrooms. My house is not infested or anything, I see around 10 or less a year, but I would like that number to be 0 or as close to 0 as possible. I am deathly afraid of them. Yes, I know most of them are harmless and important to the ecosystem but it's a severe phobia, what can I say. What I am doing is emptying a full can of bug spray in to each room every 2 weeks, but that is getting expensive at $40 a month on bug spray. And, yes, I realize it is poisonous. Is there anything else I can do? I've heard about placing chestnuts, and sprinkling lemon pledge everywhere. Should I give that a try? Anything that will help in removing these pest would be greatly appreciated. Thank you. =]