How can we prevent arsenic exposure from existing CCA-treated wood structures?
• Apply an oil-based stain or sealant every 1 to 2 years to dramatically reduce the amount of arsenic released from the wood. The sealants lose effectiveness and must be reapplied to continue to provide protection. • Wash hands thoroughly after coming into contact with CCA-treated wood. • Keep children and pets away from contaminated soil under decks or other areas where treated wood may have leached arsenic – the soil should be covered with mulch or other protective barriers. • Use a plastic liner for garden beds framed with treated wood, especially if beds contain edible plants. • Follow safe handling guidelines (gloves and goggles) when working with or disposing of treated wood. • Do not burn scraps or use treated wood for chips or mulch.
