Kiln dried wood for furniture is moisture content reduced to apz 6-8% then is stacked in free air where it will reabsorb/ stablize to apx 12%. Usually done in a controlled atmosphere dehumidification type of system. Not just baking the snot out of it which would cause quite a bit of loss splitting and warpage wise. For fire wood baking it works fine, but the cost of doing so kinda defeats our main purpose, not paying the fuel/electrical companies. Course if in the fire wood supply biz and doing so gets enough income to support same great. I am kind of cheap and mother nature is not always very cooperative ( like most of us eh).
In some areas only heat treating is allowed for transportation across state and or bug infestation 'lines'. There are too many governing bodies with too many variations on definitions within those governing bodies. It would be nice of there were universally accepted standards, but they're just aren't.
