William from Valdosta, Ga writes
Mold on rough cut pine should not affect the efficacy of Boracare, if you do need to treat for mold, we recommend to use Boracare with Moldcare instead. If the wood is part of an outside structure, we do recommend staining it to lengthen the life of the wood and the efficacy of the product, however you do no have to.
Answer last updated on: 06/02/2021