In the last case it is important to use a portable HEPA vacuum since regular vacuums are not very efficient and can significantly increase your exposure to allergen-containing dust. The effectiveness of such dust-control measures in reducing allergy and asthma symptoms has not been consistently demonstrated in controlled scientific studies. Though science has yet to prove the effectiveness of dust control measures, most allergists believe it to be effective, as do many of their patients. Even though there is no proof of its effectiveness, dust control measures are worth a try. In theory the dust control measures described above should work by both reducing dust mite populations and allergen-containing dust.
Plastic sheeting prevents moisture from penetrating bedding.
Though plastic increases the amount of moisture on its surface, it can dry out more quickly by drawing back the bed cover during the day.