Whatever pesticide you use, you need to treat cloth seams and cracks in skirting, floorboards, furniture.
IME Permethrin or other organochlorine/phosphate based sprays need a lot of airing as they won't do you any good either.
Dimethicone(silicon) based ones work mechanically by covering the critters spiracles (breathing holes), they make surfaces slippery and seem to need less time to air after spraying, it's mainly the propellant that needs airing.
Powder based pesticides dry out egg cases, larvae etc and may have a chemical pesticide added, you don't want to breathe in too much of them either. Vacuum them up after the time stated on the product.
Try wearing an insect repellant at night, (hope your pest control saviours come soon), citronella is usually well tolerated.
Regular vacuuming and dehumidifying makes the environment less friendly to critters in the UK climate if that's where you are.
Good luck.