Semco Teak Wood Clear Finish Sealant Protector - 1 Gallon (Covers 200sqft) - Waterproof & UV Resistant for Outdoor Furniture, Decks & Boats - Packaged by FurnitureOutlet

I bought a quart when I acquired a new (6') teak table three years ago. After giving it a few coats top and bottom, it has needed a quick freshener twice each year. The teak remains almost new-looking and easy to clean.This product does not have the smell of most volatile chemicals. My impression is that it is relatively non-toxic. It applies easily, having a water-like consistency, and dries quickly (within about 15 minutes on a mild spring day). You do need to keep stirring it during application because it settles quickly. It retains its full effects--water beads up rather than soaking in--for about a month and partial effects for two to three months. (Our table is outside in partial shade three seasons of the year.) Re-application is quick and easy: it can be most easily done with a disposable foam brush, but even a few paper towels will do the job. I clean the table (soap and water, sometimes with a little bleach) each time; there does not seem to be any buildup of surface material from the repeated applications.Although this product is expensive, its cost per year is low: my first quart is used up, so I have purchased a gallon and hope it will last at least ten years. That's only 1% of the cost of the table per year (and 20 to 30 minutes of easy labor) to keep it as good as new.