How wet does borate-treated wood need to be before borate will leach out?

Borate will leach out only while wood is exposed to flowing liquid water and the moisture content is above fibre saturation (averages around 27% moisture content, although this number varies depending on wood species). This can occur when the wood has extended contact with rainwater or very heavy condensation. Moist air, even at 100% relative humidity, does not cause loss of borate.

More.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.