What an audit actually asks for
Audits rarely ask whether a building is clean, because the auditor can see that. They ask whether there is a system: a defined scope, evidence it was followed, a record of products used, and a trail showing what happened when something was found to be wrong. That is a documentation question, and it falls partly on your cleaning provider whether or not anybody has told them.
The gap usually appears in the periodic work. Routine attendance is easy to demonstrate because somebody was plainly there. Quarterly and annual tasks are harder, and a provider who cannot show when the last floor treatment or high-level clean occurred leaves you asserting it happened. Ask specifically how periodic completion is recorded and where that record lives and where the record is kept between one audit and the next.
