I went to the vet and got flea spray. Think it was indorex too. Pretty nasty stuff but did the job. Have to leave the room alone with closed doors for a few hours as the fumes are very harmful to people and animals.
Also if you are using frontline on your pets it doesn’t work any more it’s been overused in a diluted over the counter form so the fleas have developed a resistance so get different stuff from the vets. We are using stronghold
Don't forget to spray soft furnishings too (test on a small hidden patch just in case). We found the spray to be good but we had only a small number of fleas, so I think we caught it early.
My PIL did a couple of bombs in their open plan downstairs (all carpeted). Was very effective but they went away for the weekend while it was happening. They didn't need to repeat it, on application did the trick.
Yes hoover each room, especially around the edges and spray the room, getting into all the cracks and corners. Do each room methodically. Mind it's toxic stuff so if you have fish tanks they need to be well covered. Even the snake got covered up.