I note your history & your family's predicament with interest.
As for the management, i suggest keeping a hydrocortisone
based cream & an antihistamine (either syrup or tablet form as per the ages of family members) close at hand!
Have you tried spraying the house with an insecticide at regular weekly intervals & getting rid of all carpets in your home?
If at night, then, perhaps keeping a couple of electric bats (the zappers as they are called) may be good or a similar gadget that can be hung or affixed in your portico or hall to attract the insects at night & shut off all the lights.
Another useful ploy may be to ensure all windows/doors etc are shut by 4/5 pm & that they are all meshed.
Good Luck & wish your family good health always!
Dr Praveen Rodrigues MD