What can i do about dust allergies?

Enviro control: You can use dustmite covers for pillows and mattresses(achoo allergy has good ones), wash sheets in really hot water once weekly, decrease humidity of the house to less than 50%. Those are the most beneficial. Wear a mask when vacuuming or dusting. Or if you have your house cleaned, allow about 2-3 hours before you come back to your house to allow for things to settle back down.