How do I get rid of these tiny moths in my room?

I think they are mill moths, or flour, not sure. In my room I have a hamster, his food, cage, and all his stuff. I have a mini fridge, and when I eat I through the wrapper out with may have crumbs. But I never leave my windows open, and my door only sometimes. I killed a few, then I noticed them on the wall and two on the ceiling. How do I kill them? Is there any other tips then moth traps?