Depending on the shape of the runner and area where to be attached, scratches may occur and the product may not attach securely. / May not attach securely in some areas with rounded corners. / Do not use if the angle of the corner is not a right angle (90 degrees). Falling may occur.Do not use to hang valuables or fragile objects.Use and keep out of reach of infants.Immediately discontinue use if the product becomes deformed or damaged.Do not use this product for purposes other than its intended purposes.