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Cyproconazole Wood Preservatives

Cyproconazole is a water-based fungicide used to protect above-ground wood. Cyproconazole does not protect wood from insects. Although cyproconazole is used as a fungicide on some crops, many of the wood preservative formulations are not intended for use on wood that comes in contact with food. Some cyproconazole wood preservatives also contain the antimicrobial didecyldimethylammonium chloride (DDAC). Cyproconazole has been approved by EPA for surface application or pressure treatment of wood for above-ground uses, including siding, plywood, millwork, shingles, lumber and other uses.

For help selecting the proper type of treated wood for any setting, consider consulting the primary standard-setting body for treated wood, the American Wood Protection Association (AWPA).

If you have questions about this, or any pesticide-related topic, please call NPIC at 800-858-7378 (8:00am - 12:00pm PST), or email us at npic@ace.orst.edu.

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Last updated January 22, 2021

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