I have timber from pallets without any stamps. From my research, un-stamped pallets may be for domestic use and, therefore, are not treated in any way.
With that said the timber has some granular whiteness in places. It is almost like salt in texture with occasional granules on the surface. There is no odour.
The image shows the whiteness on the right mostly. Is this methyl bromide?
Ultimately my question is one of safety. Should I use this timber for outdoor furniture and dog houses?