Gnats

How do you get rid of them?

All of a sudden, my kitchen seems to be the gnats new home. There must be 30 or more of them and I'm not sure how to go about getting rid of them. Don't really want to spray bug killer all over the place. I've been swatting at them with a dish rag, but that doesn't seem to phase them.

Anyone have a good way to get rid of these things?

Thanks