Prior to the early 2000s, pressure-treated wood was treated with chromated copper arsenate (CCA), which contained arsenic, chromium, and copper. The chemicals in CCA-treated wood were found to be ...

When wood is pressure treated, chemicals are forced into the wood to preserve it and make it resist rot, decay and insects. Three of the most common chemicals used to treat lumber are discussed below.

Do not burn treated wood waste, as it contains toxic chemicals. Treated wood is full of pesticides that contain harmful chemicals. Wood is “treated” (i.e. dipped, sprayed, or pressure-treated) with ...

Do not burn treated wood waste, as it contains toxic chemicals. Treated wood is full of pesticides that contain harmful chemicals. Wood is “treated” (i.e. dipped, sprayed, or pressure-treated) with ...