What do I do after I flea bomb?

There is a lot about fleas I didnt realize until I had to cats infected in an apartment. I bombed the place and yet they came back. They say fleas can infect your yard and you have to call an exterminator. I put my dishes in the refrigerator and then steam cleaned EVERYTHING! I also used a carpet powder. I wiped everything down with a towel afterwards. It really wasn't as bad as I thought it would be. Things that are really personal like your pillow I would do something different with that. I bagged up all my blankets and washed them at my parents house and put them in the dryer. I then bagged them and taped it shut for like 3 months. lol. Eventually I hate to say it but I gave up. I took my kitty back to my parents house where she was used to living anyway and took my other kitty back to the farm where we got her not long before. We still visit them I just can't keep them here in this apartment. I believe it is infected bad. Fleas can live dormant with no food for like 9 months. Bombing wont always kill the dormant ones. All I can say is good luck! My sister in law used a professional exterminator and she said that took care of her problem. She hasnt seen any fleas since.