When working with used pallets, it is important to determine how they were manufactured and built to avoid the toxins used in chemically treating the wood of the pallet. Here is a great summary of some of the things to look for when picking up free pallets for your next DIY project.
This is a companion discussion topic for the original entry at https://peakprosperity.com/how-to-tell-if-a-pallet-is-safe-to-re-use/