Water Quality District - Hazardous Waste
Wood Preservatives
What are they?
Wood preservatives are products that may contain pesticides which protect wood from pests and rot. Three widely used wood preservatives to treat wood include creosote, inorganic arsenic compounds, and pentachlorophenol, and all are toxic.
Safety Tips
- Never burn wood treated with preservatives.
- Avoid breathing dust from cutting wood treated with preservatives.
- Seal treated wood with a shellac or other oil-based sealant.
Disposal Options
Dispose:
- Household Hazardous Waste Collection Event: Haz Waste Days in September accepts wood preservatives. Note: Haz Waste Days does not accept wood treated with preservatives.
The Residential Disposal Guide is provided by the Missoula Valley Water Quality District as a public service and is not an endorsement of specific businesses, services or products. Any omissions or inaccuracies are unintentional. Please contact us with corrections or additions. Call businesses or agencies to confirm hours, locations and charges for services, if any. For information on disposal of items not listed, email or call the Water Quality District at 406-258-4890, M - F, 8 am to 5 pm.
Much of the information provided is from the Washington County, MN, Dept. of Public Health and Environment website.
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