A bug bomb, or fogger, can be used in conjunction with flea medication for your pets as a useful tool to combat a flea infestation. We have had good experience with this flea bomb.
You need to make sure that all people and animals are outside of the home when you set off the bug bomb, because the toxins should not be inhaled directly.
Wait at least three hours before coming home, and then thoroughly ventilate the entire home by opening up the windows, running fans, etc.
Each container will successfully treat a large room.