I used Ultimate Spar Urethane Water BasedI'm planning on talking with a buddy on Saturday who has essentially dedicated his life to woodworking. Going to ask him what the best finish is for how I plan to use it. I want to keep as much of the wood uncovered as possible and I'll be in the same boat with a wet/dirty dog, skis, golf bags, bike gear and so forth. My initial though is to finish all of the wood with an oil/wax penetrating type finish and then put a carpet over it similar to the carpet @reddog90 shows in the picture above. I'm not sure how I'll attach it yet. Baltic birch is beautiful so I hate to cover it up and I'd rather just have it patina over the years.
I was very happy with the results however it’s only been a few weeks
I used a piece of carpet scrap and had the edges bound so they have a cleaner look…. Plus the Dogs leave it alone and the weight on the edge helps keep the carpet in place
Enjoy the units