If you have any concerns about hauling firewood with the quarantined areas that we have because of the "Emerald Ash Borer;" these two web sites may help answer any questions you may have. There may be other information available if you search for it but these are a couple of sites I came across.
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
2017 3500 Dodge Maxi DRW 4X4, Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, etc.
1. Are you not supposed to burn "pressure-treated" wood scraps in a fire pit? I don't do this because I'm guessing this wood could be toxic.
2. Besides possible investations of some wood, are there other categories of wood that are deemed hazardous to use in a fire pit? I've seen many that have used scraps or remnants of wood building and projects that people burn in their fire pits. I don't recall painted wood in the mix, but I'm guessing these should not be used.
Not sure of the laws on that Art but I would believe that your thinking would be correct. Myself I only burn clean wood due to the risk of getting anything toxic out of it. I would think that treated wood or anything with a coating on it from paint, varnish, etc… would be a no no IMHO. I’m careful of this because we often use the fire for cooking, e.g. marsh mellows, hotdogs, etc… I wouldn’t want to create a fire that might put of toxins that could be harmful to the food. I’m not aware that there would be any type of fire wood that would be harmful to use.