How do you get rid of noisey crickets inside of a wall?

I have a question. I live in a town that is full of crickets. They are multiplying and multiplying. One sneaky little cricket manage to climb up the wall and into my bedroom walls. He has been chirping all night. The only way I can stop him from chriping is turning on my lamp at night. What I don't understand is how he managed to stay and live in my wall for the past 2 months. Its very annoying and I need a solution. Please don't say they're good luck because I don't belive that a chirping cricket that annoys me is "Good luck".