The links in the posts below may be affiliate links. Read the full disclosure
All pallets are required by law to have a stamp on them in regards to how they are weather treated. ONLY choose pallets that have a HT marking that is burned into the side of the pallet.
Some pallets have a MT stamp marking burned into them, you want to AVOID those as they have been chemically treated and are NOT safe for signs, home decor, or furniture use.