We have gone from green to blue. We are using a new product for sill plates, no longer using the green pressure treated lumber. The new lumber is fir treated with Borate.
Product is call Advance Guard. For more info see www.osmose.com . Seems like a good alternative to the old PT lumber, the old green stuff always seemed to be hard to find clean looking stuff & 2 sticks were never the same. The new blue has some of the same issues as the green like, donot burn,wear mask & goggles wash hands after use. Will get a price from the lumber guy to see price vs green pt.
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Just a note for people that want to use it for other applications.
It is limited to DRY locations. Can't be in the weather or ground contact.