NES Cleaning Kit
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The NES Cleaning Kit was produced in 1989 by Nintendo as an accessory for use with the Nintendo Entertainment System. The Cleaning Kit contained two green plastic cleaning tools and an instruction manual. The first tool consisted of a plastic handle and an end with a c shaped padded cleaning surface. This surface was designed to be wet with water and inserted over the contacts of a cartridge and used to scrub the cartridge's contacts. The second tool was similar in design and function but had a flat padded end for insertion into the console itself to clean the console's contacts. Cleaning the console and the cartridges once a month would supposedly extend product life and increase reliability. Long use would eventually dirty the cleaning pads, which could be replaced at cost through either mail order or by phone using information found in the manual. The Cleaning Kit was apparently created in response to the common practice amongst gamers of blowing into the cartridge or console in an attempt to remove dust from the contacts.
A similar kit was produced for the Super NES and Nintendo 64.