The document discusses different types of furniture polishes - aerosols, liquids, and semisolids - and their benefits and drawbacks. It notes that aerosols and liquids can introduce contaminants onto furniture surfaces. Liquids also deposit more material than sprays. Oils used as polishes can damage furniture over time through chemical reactions. Semisolids like paste waxes are generally the safest option as they do not cause the same issues and only require light, periodic reapplication. When used properly, wax polishes provide the best protection and appearance for wooden furniture with minimal risk.