By combining efficient air conditioning with effective control of humidity indoors dramatic reductions of house dust mite colonies were reported and maintained.
By controlling indoor humidity (below 51% relative humidity), house dust mite populations were reduced by 76.5%. The seventeen-month study took place in a temperate climate that included two humid summers. Researchers used free-standing high efficiency dehumidifiers and air-conditioning as the only physical intervention.
Reference ‘Reducing relative humidity is a practical way to control dust mites and their allergens in homes in temperate climates’. Arlian LG et al, 2001, J. Allergy Clinical Immunol. Volume 107, number 1, pages 99 to 104
