Where to use it. Grass cloth works nearly anywhere in the home, with a couple of exceptions. Because it doesn't withstand moisture well, it's not a good choice for high-humidity areas such as poorly ventilated bathrooms. Also, it can fray under repeated rubbing and bumping, and you can't wipe it with a damp rag or sponge, so think twice about installing it in a high-traffic area such as a hallway or playroom. If you want the effect of grass cloth in spaces like these, consider a vinyl or paper lookalike. So where should you use it? It shines in living and dining spaces, offices, libraries and bedrooms. And its thick weave makes it an excellent partner for walls that aren't completely smooth, although — as in my sunroom — it will magnify prominent bumps and cracks.