puede ser algo así como: se requiere de especial cuidado al limpiar y secar el ....
o se debe tener especial cuidado al limpiar y secar....
pero la idea de scouring es limpiar

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Note added at 8 mins (2005-11-06 01:09:39 GMT)
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Specialty Definitions: Scouring
Domain Definitions
Geography Localized erosive action of water in streams, excavating and carrying away material from the bed and banks. Source: European Union. (references)
Industry . . involves washing in warm soapy water several times, followed by thorough rinsing and drying. . . . it removes the natural grease in the fiber, the suint or body excretions, dirt and dust. Source: European Union. (references)
Is the method used. . . to remove grease, suint, dirt and other foreign material from the wool fiber. It consists of a series of washes with soap and soda ash and several rinses at varying temperature s. Source: European Union. (references)
To remove the sizing and tint used on the warp yarn in weaving, and in general, cleaning a fabric or yarn prior to dyeing. Source: European Union. (references)
Literature Scouring I'scaped a scouring - a disease. Scouring is a sort of flux in horses and cattle. (Latin, Malum proetervehi, French, L'échapper belle.). Source: Brewer's Dictionary.

http://www.websters-online-dictionary.org/definition/scourin...