It's tells you to use mild soap, but I would get jewelry cleaner. It works well with it.
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Ultrasonic Cleaner, Professional Ultrasonic Jewelry Cleaner 20 Ounces(600ML) with Five Digital Timer, Watch Holder,Cleaning Basket, SUS Tank for Cleaning Eyeglasses, Ring,Watches, Dentures
Price: $39.99
Description
★To clean: \r\n\r\n Jewelries: necklace, rings, earrings, bracelets etc. \r\n Glasses and timepieces: eyeglasses, watch chains, waterproof watches etc. \r\n Commodities: shaver heads, razor blades, dentures, combs, toothbrushes etc. \r\n Metal articles/Dishware: watch parts, coins, spoons, forks etc. \r\n Stationery: pen-heads, printer-heads, inject cartridges, seals etc. \r\n\r\n \r\n ★Principle of Ultrasonic Cleaner: \r\n\r\n Ultrasonic cleaning is based on the cavitation effect caused by high frequency Ultrasonic wave vibration signal in the fluid. \r\n Microscopic bubbles are formed,and they implode violently causing the cavitation which create an intense scrubbing action on the surface of the item being cleaned.\r\n The bubbles are small enough to penetrate microscopic crevices,cleaner them thoroughly and consistently.Ultrasonic cleaning is extremely effective at removing dirt and grime which would normally require tedious manual cleaning by hand.\r\n It has been used to clean a wide variety of instruments and mechanical parts such as carburetors,returning them to almost ‘like new’ condition without damage to delicate parts.
