Deep cleaning is usually an easy task as the people requiring deep cleaning of there property, will usually give us very precise instruction and would follow us closely.
It is of course note necessary to follow the work but at least your requirement shall be discussed with the project manager.

Our manager shall make sure that our team is really cleaning every where!

Here is the point, cleaning need to be done where the regular maid can not access or does not want to access. This means high rise area or moving of furnitures.

Sometimes disasembling air con filters, Kitchen hood filter..., door and windows frame