I use natural tree branches from my property all the time but don't wash with vinegar(!) as wood might retain that acrid odor for a long time. I spray mine w/ the same solution (diluted chlorhexidine) that I use to wipe out my tanks...let it dry completely, no rinse needed. It's just to kill some germs that might be on them from birds etc. I've had a few bark beetles tunneling into branches too, once in a while; they are harmless to snakes, they only eat chomp on wood & you'll know you have them if or when you see tiny piles of sawdust on something in the enclosure...Bamboo poles can work fine too. I usually try to dry my branches outside in hot sun before using also...my snakes are too big for their branches to fit in my oven, lol.