I’d focus your cleaning on areas that have crevices or textured surfaces, as well as the corners and edges or hardwood floors, etc. You might try Dawn dish soap for cleaning, as it’s supposed to be fairly toxic to fleas but harmless to people.

Mostly, I’d focus on vacuuming, and you can try a borate flea powder on your carpets beforehand. That’s non-toxic to pets and humans. Consistent vacuuming is your best bet though, since that will do a lot to kill fleas and pupa without the use of any toxins.

Good luck, and please come back with any questions, or to report and how it goes.

Thanks.