Murray
Smoking Fanatic
Sticky and gooey? Looks to me like pine/spruce. I’d still burn some just to double check. If you can get your hands on some scrap 2X4’s pieces burn them also as a comparison. Dimensional lumber is often pine/spruce both similar smell when burnt but way different than deciduous. As I mentioned in a previous post run them through a saw and give them a sniff. It’s so hard to identify wood through a computer screen, not being able feel , smell and even taste.