What can one do to make sure a room is thoroughly cleaned?

we must know the proper and standard how to clean nd we must double check corner to corner all the amenities inside the room

to always follow the standard procedure, making sure one follows it very carefully. Also one should be able to have a fresher smell after a room is clean, making sure that its neat and tidy

follow the standard operating procedure and always double check everything on the room even the functionality of the amenities.