A riding floor scrubber is disclosed having a relatively narrow cleaning width for passing through relatively narrow passages such as conventional doorways. The container includes a base and a cover each having an inside surface. 8% by weight of water and a dry material consisting of 88 to 95% by weight of an acerola fruit dry extract and 5 to 12% by weight of magnesium, calcium, zinc, sodium or potassium hydroxide or carbonate, the method of preparing same and the applications thereof for replacing ascorbic acid andor the derivatives of same in food products. The present invention overcomes this by providing a support structure which can move sideways without requiring the entire frame to move sideways. In some embodiments, a cutting tooth of the bone removal device is formed with a curved, such as convex, cutting face.