Dust corners Dust corners are a small but smart stair detail that makes a big difference. Fitted neatly where treads meet risers, they stop dust and crumbs from hiding in hard-to-clean gaps. With a classic decorative finish, they keep stairs cleaner while adding timeless charm. For more info: http://kahkaham.net/read-blog/185157_the-little-detail-that-makes-a-big-difference-why-you-need-dust-corners-on-your-stairs