Before the first shift
A good mobilisation front-loads the administration. Keys issued and recorded, alarm codes set up, inductions completed, insurance evidence lodged, consumables ordered and equipment delivered. Ask which of these the provider expects to complete before the first attendance and which they would handle in the first week, since the second answer usually means the first shift will be partly spent on logistics and that time comes out of the cleaning rather than out of anybody's margin.
The site brief belongs here too. A provider who walks the premises with the assigned cleaner before their first solo attendance is investing an hour that saves a fortnight. Ask whether that happens and who attends. It is a simple, checkable commitment and it is one of the clearest signals that a provider has mobilised sites before rather than simply starting them and it costs the provider an hour they will recover several times over.
