mop buckets, although they do have a place, won't get your fined like using extension cords, spray bottles with no labels on them, fans without guards, improper PPE items, lack of first aid and eye/body wash stations or storing flammables without the proper locking fire-proof cabinet, this includes your spray tack.
they look at work paths, electrical panels, equipment maintenance. when was the last time you did X, Y, Z?
Essentially they want to make sure your employees have all of the basic safety measures in place and that you are aware of those measures, and are consciously thinking about those measures and their relation to your employees well being.