As allergy attacks often occur in spring, the Environmental Protection Administration (EPA) yesterday said that dust mites can be prevented by keeping rooms cool and dry. Dust mites are a factor in some types of respiratory allergic reactions, according to the administration and other agencies.
Department of Environmental Sanitation and Toxic Substances director-general Yuan Shao-ying (袁紹英) said about 90 percent of Taiwanese suffering from allergies are allergic to dust mites.
With the coming of spring, indoor humidity levels often increase, multiplying allergic reactions, he said, adding that when people with allergies are exposed to dust mites and dust mite feces, symptoms such as asthma, sneezing, nasal congestion, runny noses or allergic conjunctivitis may occur.
The EPA said dust mites thrive in room temperatures between 22°C and 26°C, and humidity levels between 70 and 80 percent — a warm and humid environment.
The pests thrive near pillows, mattresses or sofas, where the flakes of dead skin, hair or food crumbs that dust mites eat are often found.
The most effective way to get rid of the pests once they are in the house is by thoroughly cleaning the indoor environment, reducing the humidity level and keeping rooms well-ventilated, it said.
Walls with water leaks should be repaired as soon as possible, and kitchens and bathrooms should be kept dry after use, it said.
A dehumidifier may also be used to help keep the humidity levels lower than 50 percent, it added.
The administration suggested that pillowcases, blankets and bedsheets be washed frequently in hot water between 55°C and 65°C.
Additionally, people who have respiratory allergies are advised to replace fabric curtains with plastic shades or window blinds.
The EPA said pesticides or other toxic environmental agents are only temporarily effective in preventing dust mites, and that the best way to keep them at bay is through keeping the environment clean.
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