Largest house cleaning lesson

According to Official Guinness Records,

The largest house cleaning lesson consists of 2,030 participants, achieved by Saudi Manpower Solutions Co. (SMASCO) (Saudi Arabia), in Riyadh, Saudi Arabia, on 13 April 2018.The lesson was part of SMASCO's continuous employee training.

For a complete list of 2018 records, please visit 2018 Guinness Records in Saudi Arabia.

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