Mason Walmart Supercenter temporarily closed for cleaning Mason Walmart Supercenter temporarily closed for cleaning By Maggy Mcdonel | May 11, 2021 at 3:46 PM EDT - Updated May 11 at 4:10 PM MASON, Ohio (FOX19) - The Walmart Supercenter in Mason will be temporarily closed for a thorough cleaning and sanitization. According to Walmart Communications Director Charles Crowson, the store was closed at 2 p.m. Tuesday and is expected to remain closed through Wednesday and should reopen Thursday, May 13 at 7 a.m. Crowson says this will give a third-party cleaning crew time to clean and sanitize the building; he did not provide a reason for this last-minute cleaning.