But when that is not enough, drugs can help. ... read more
Some are washable, others are not. Some are designed to last the lifetime of the device (usually 3-10 years), others will have to be replaced after 1-2 years or so. Prices vary considerably and the higher-priced models don't necessarily have lifetime HEPA filters. ... read more
"As they are no miracle cure, these devices do career ever since advertised. They do reduce the quantity of dust, smoke and other petite particles in the air, sometimes substantially. One key to their effectiveness is getting 1 the appropriate size for your room. A 10 x 15 foot room is on the outer edge of number for a pleasant or undersized purifier. Any room bigger will require a full-sized air home purifier."

allergy to propylparaben - cat alergy