House dust mites (HDM) are small enough to sit on the tip of a pin, yet dangerous enough to cause allergic asthma, rhinitis and dermatitis
The House Dust Mite
Photograph by the late Dr Harry Morrow Brown and gifted to housedustmite.com
`Exposure to allergy causing house dust mites, also called HDM, is a major health problem worldwide. To stop mites from infesting household items such as pillows, duvets, or cushions the highest quality of anti-mite fabric is required. This fabric was clinically identified as being:
Please note: Tightly woven fabrics are derived from twisted cotton or synthetic fibres perpendicular to each other and having either a regular, systematised bi-or tri-axial weaving pattern. To block dust mites from entering a fabric a thread count greater than 246 per square inch is advised. A pore size of 6 is recommend as satisfactory for 'breathability'. Patients with allergic dermatitis need to be aware that some anti-mite fabric may feel uncomfortably 'hot'. An extra layer of a washable cotton quilted cover over the mattress may help keep the sleeper comfortable while absorbing perspiration. Cotton quilted mattress covers must be hot washed, or washed normally then dried in a hot tumble dryer every two weeks. This will prevent any travelling mites from finding a home.
Example of tightly woven fabric
Thread count greater than 246 per square inch with a pore size of 6 microns is recommended
Anti-mite Covers: Potential Criteria for Materials Used Against Dust Mites. Vanna Mahakittikun , John Joseph Boitano Chulaluk Komoltri, Prapakorn Ninsanit, Teerapong Wangapai 'Textile Research Journal', 2009, 79: 436,443