Treated test panels were installed in January 1984 in a Florida estuary where Sphaeroma terebrans had severely damaged pilings treated with copper chromate arsenate (CCA). Test treatments were CCA at three retentions, coal-tar creosote at three retentions, creosote with chlorpyrifos, dual treatment with CCA and creosote, and three types of chemical modification of the wood test panels. We describe the condition of the panels after 3 years exposure in the intertidal zone. Results of a 1985-86 survey are summarized, showing that this borer is common in Florida estuaries along the Atlantic and Gulf coasts.

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