There's a damn rat in my room

Or maybe a mouse? It's a small one. Feisty and fast. I was at my desk when I heard something move in the back. I thought it was the curtains rubbing against a drawer near my window at first. A while later, while in bed, I heard it again. I looked around and thought I saw a black mass on the floor. I went to turn on the light and it was gone. At that point, I figured it was a rat. Or a big-ass spider. So I went and got a mouse trap. One of those strips of sticky stuff. I placed a few around and waited. And then I saw it. I saw the little head poke out behind a drawer and scram back when I moved closer. Now, I don't like rats. You don't know where they've been. You don't know what they're carrying. What's worse, is that my bed is essentially a futon. It's on the floor. It's not resting on a bed frame or anything like that. So I'm stuck practically on the floor with this damn rat scurrying around. I went ahead and ordered a bed frame which should arrive soon. It'll give me some peace of…