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John writes

Once the Bora-Care has dried, is it safe to cut the treated lumber without a mask? Is the sawdust toxic?


Sawdust from Boracare treated wood would be no more toxic that untreated wood, though you should avoid breathing in either.  You should cut the wood to the final size before treating with Boracare. You do not want to waste the product on wood that will not be used and as Boracare can take up to 30 days to completely penetrate. 

Answer last updated on: 06/02/2021

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