Spending on mesothelioma and asbestos legal ads declined in August following steep monthly increases in June and July. Spending has still not returned to the levels of the beginning of the year though. (See graph above)

This year, over $21 million has been spent on mesothelioma and asbestos-related legal ads through the end of August

Law firms purchasing these ads cast a wide net in their efforts to attract potential claimants. Two-thirds of asbestos advertising spending has been devoted to national cable and broadcast networks. Just over 10 percent of 2013 asbestos legal advertising spending has been spent in the nation's largest media market -- New York City.

See sample mesothelioma and asbestos ads: