x Use a good quality air filter on your furnace and replace it regularly.

x Maintain ventilation systems (if your home has one) and dehumidifiers.

x Run exhaust fans in bathrooms and kitchens.

x If you’re considering an air purifier, avoid devices that generate ozone, as these can make lung problems and asthma worse.

For better models, see Resources (p. 90).

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TOYS, TOO In addition to acting as fragrance enhancers, phthalates are used to soften plastics in toys. Last October, California banned the use of six phthalates in children’s personal care products and in toys kids may put in their mouths. Seek out playthings made from solid wood and natural fibers.