Sonite is an exceptionally strong material whose beauty should last indefinitely if the material is handled and maintained properly. Sonite can best be maintained by periodic cleaning with a soft, damp cloth or with soapy water when necessary. Avoid use of a dry or gritty cloth it may scratch the material’s surface. Avoid strong cleaning solvents or agents, especially ones containing abrasives. Never use kitchen scouring compounds, acetone (fingernail polish remover), alcohol, gasoline, lighter fluid, chlorine bleach, lacquer thinner, window cleaner or waxes.