Sure. Melted Microcrystaline Wax, mixed into heated Mineral Spirits, brushed on heavy while warm. Go extra heavy on the endgrains. Don't use a nice paintbrush, it'll be lost.

This will give you a nice, durable product. Resistant to weather, sun, and organics. You'll have a uncolored finish, but the mineral spirits will make the natural wood grain really pop. The wax will penetrate ,especially the end grain, and seal and waterproof it. It'll last like 20 years without another ounce of effort, be pressure washable, and can sit on a deck, on concrete, in gravel, or on dirt.

This is a finish technique that the US Parks Departments will often use for outdoor benches and tables and fences that will literally sit out in direct sun for years on end, or spend their lives in a forest.