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Poison on the Playground
Should Parents Be Concerned About Treated Wood?
By C.J. Johnson
Parents who remain concerned about the long-term impact of CCA products and want to limit or avoid contact with such products may want to take a few simple precautions. If they or their children spend time on the CCA-treated play sets, they should wash hands thoroughly afterward and keep food from touching the wood directly.
Parents should keep in mind that the EPA does not recommend removing the soil or replacing existing structures made with CCA-treated wood or the soil surrounding those structures. But parents may take steps to reduce and even eliminate CCA exposure to their children.
Some studies suggest that applying certain penetrating coatings such 
as oil-based or semi-transparent stains on a regular basis may reduce the migration of CCA chemicals from the wood. Non-penetrating stains on outdoor surfaces such as decks and fences are not recommended, because peeling and flaking of the wood in the future may have an impact on durability as well as exposure to the preservatives in the wood.
There are also several non-arsenic containing wood preservatives that have been registered with the EPA. Of the various forms, ammonium copper quaternary (ACQ) and copper boron azole (CBA) are the most common. Some wood treated with these preservatives is already available at retail outlets and home improvement stores.
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