If your child is allergic to house dust mite allergens, wash your beddings (bed sheets, pillowcases and covers) in hot water that is 60°C weekly or fortnightly. Minimise the use of carpets, soft toys or thick curtains. The house should be kept dust-free by damp cleaning. Vacuum only when your child is not at home and let the air settle for about 2 hours before allowing him or her to enter the room. Mite-proof mattresses and pillow covers may be helpful but are expensive.