Capstar works within 20 minutes ... Someone also told me that bathing in some type of heavy salt solution works. However, the problem is the fleas are living in your carpet now and are probably all over.
It sounds like you will need to set tons of flea bombs and get everyone (including pets of course) out of the place for several hours. OR ... if it's an apartment or something, get them to call pest control for the professional grade stuff!
That REALLY sucks ...
