Unfortunately, when you live in an apartment, yours can be spotless and if the bugs are in someone else's, they'll migrate into your space as well and there isn't too much you can do about it. However, I've tried nearly every pesticide under the sun, and some work better than others. This one works by far the best, and lasts the longest. Raid Bug Barrier. It may not keep them all out, but it will definitely minimize the problem.