This gives you respite as you sleep, and also a haven if you react strongly. Don't have lots of ornaments around, as they collect dust. By the same token, books left lying around pose the same problems. Delegate this task to someone else. Using a duster that creates a static charge allows for more dust to be removed, as opposed to just shifting it around.
Molds account for a large proportion of problems for the sufferer.
In the same strain, fix leaking pipes. In the case of a child, replace stuffed toys with washable ones. Don t hoard old items in the attic or basement. They collect dust. Wash your own bed linens as often as necessary to keep your problems down.