And because moulds and dust mites thrive on moisture, they pose a particular problem in humid areas, such as the Pacific Northwest, parts of the northeast, and in Canada's Atlantic provinces. However, any home with an indoor relative humidity of greater than 40 per cent will also encourage dust mite propagation. The construction of your home can be a factor. But older homes can have a buildup of moulds in poorly maintained ventilation systems or as a result of leaky roofs, basements and concealed pipes. Moulds flourish in improperly maintained air ducts, air conditioners, humidifiers, dehumidifiers, air-cleaning filters, floor drains, carpets and in improperly ventilated spaces where moisture collects, such as bathrooms, kitchens, laundry rooms and basements.
Dust mites and other insects thrive in stuffed sofas and chairs, carpets, drapery and bedding.
Moulds and mites are so common, you can't get rid of them completely, but you can control them. Control the source by reducing or removing as many allergy triggers as possible from the home, including stuffed toy animals, old couch pillows and even pets. Ventilate by keeping windows and doors open as often as possible to allow air to circulate. Tips for managing moulds and mites North Americans spend about 90 per cent of their time indoors, perhaps more during the winter months. This is especially true of young children.