Not all "bug bombs" are equal. Most are aerosols that leave a nasty film within several feet but fail to penetrate in cracks and hiding places. They are no better, no actually much worse, than spraying household insecticides.
There is a pesticide that truly works, penetrates every possible location and then is easy to clear and does not leave a gooey pesticide film. Get Raid fumigator/fogger. It is water activated with a delay and the canister generates a smoke that will stay in the air for hours and penetrates everywhere. After a few hours, you open windows, turn on exhaust fans and the smoke entirely clears.