Any one have information on using shredded flake board for mulch? I know that flake board has urea formaldehyde based glue but I haven't found any information concerning the toxicity. I know it isn't pressure treated so there is no CCA preservative. Thanks.
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Formaldehyde is a chemical preservative, so it's safe to assume it to be toxic. Do you want it leaching into your ground (drinking) water?
If you ever plan to put edible food plants in the same area, DON'T.
Non-toxic mulch materials are so abundant and cheep, why would you want the formaldehyde? It would kill all the life in your soil. A very active carcinogen, too.
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