These are not restricted to the Sea Org, but they tend to happen a lot in there. In essence, a room or suite or floor or building has to be cleaned until an executive can walk through the entire area wearing a white cotton glove, putting his hand anywhere he can reach and wiping any surface he wishes, and it has to come up clean, dirt and dust free.
This drill is not usually done as punishment per se, but as a method of getting an area really clean. But really clean. Usually the crew doing the cleaning does not get to go to bed until the whole area passes. If white glove inspections are done routinely, it is not too arduous to pass. If an area has never been white-gloved, one doesn't usually count on getting much sleep that night.