Forget the waste of good pine. Throw them in a shredder, the way the Muslim Saddamite Iraqi ruler did. If it's good enough for Muslims, and they sure didn't protest anywhere back then. I figure it's good enough for Muslims.
Shred 'em. Feet-first. Will give them a few moments to repent...
Go green and let a few hungry hogs have them for lunch.
Then ship the remains to a pig farm.