PQ-80®Fungicide Concentrate PQ-8 AND PQ-80 ARE THE ONLY ANTI-SAPSTAIN PRODUCTS WITH EPA APPROVAL FOR FOOD CONTACT. PQ-80® provides an effective, water-soluble fungicide concentrate for controlling sapstain and mold on both hardwoods and softwoods. It’s the ideal wood preservative for effective, low-cost sapstain and mold control in freshly-cut lumber. Plus it’s compatible with commonly used, water-dilutable insecticides … Continue reading PQ-80® Additives