Since 1980, our family of pressure-treated wood products are among the most respected in the safe and long lasting outdoor wood. Wolmanized Outdoor Wood for residential use is SCS certified as an environmentally preferred treated wood. It is also endorsed with the Good Housekeeping Seal. Wolmanized Heavy Duty Wood products are durable, safe, and effective for use in agricultural fence posts, marine lumber, pilings, bulkheads, and dock systems. Sillbor borate-treated wood for weather protected and interior applications, is safe and effective against decay, termites, and mold.