Stink bugs can be maddeningly difficult to get rid of, and in many cases it takes a pest control specialist to eliminate them entirely.
However, you can try vacuuming them up. Just make sure you throw away the vacuum bag - or at least get it outside of your home - ASAP. And whatever you do, don't crush them! Doing so only releases their odor into your home.
It might take a little while, but once you've gotten rid of stink bugs, take steps to make sure they don't return. Good luck!