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...ding materials such as floor tiles, dry wall compounds, reinforced plaster. Du...

... porous surface such as plasterboard, carpet, ceiling tile, the porous material should be carefully removed to prevent the uncontrolled release of a cloud of spores into the building's environment. To avoid fungal growth in porous materials where water infiltration has occurred, the material must be dried within 24 hours. Fungal-contaminated materials should be removed under controlled conditions. Airborne fungal levels can increase by a factor of 10 or more when fungal-contaminated materials are removed or disturbed. Controlled conditions' means that steps are taken to prevent the spread of fungal contamination to ... a dust mite allergy. Dust mites proliferate in an environment that is warm and relatively humid, and where people, animals, and fabrics are present. The best means for controlling dust mite populations include: Frequent cleaning of carpet and other textiles with a HEPA-filtered vacuum cleaner Maintaining the indoor humidity at relatively low levels. Dust mites tend to withdraw from areas with relative humidity of less than 50% Cockroach saliva and feces have also been identified as sources of allergens in the indoor environment. Aside from controlling cockroach populations through pest management ... than 90% of their time indoors and that this environment is significantly more contaminated than the outdoor environment. Maintaining as pollutant-free an indoor environment as possible can improve building occupants' health, reduce liability for building owners and managers, and improve overall productivity. Indoor air pollutants are associated with or directly related to numerous health-related symptoms or complaints. Some of these have been traced to biological contaminants, which can include the organism itself (as simple in structure as bacteria or as complex as a cat) or materials that the organism sheds ...