Agree 100% ... even if you have to leave the house for a few days, go the chemical route and repeat as necessary. Ditto for whatever pet brought them into the house (if it's your pet). I prefer the foggers as it reaches all the un-reachable areas.
If you have pets that are allowed to go outdoors, spray the yard as well otherwise they'll pick up more fleas (as will you in fact), and bring them right back in. We spray our yard a few times per year.