A standard clean is built to keep a building at a steady baseline — desks wiped, bins emptied, floors done, kitchens and washrooms covered. It isn't designed to fix a building that's already fallen behind that baseline. Here are the signs we'd flag on a walkthrough as worth a deep clean or a change of schedule, not just another standard visit.
1. A smell that doesn't go away between visits
A lingering odour — in a kitchen, a carpeted area, or a washroom — that's still there the morning after a clean usually means the source is somewhere a standard visit doesn't reach: inside a carpet, behind an appliance, or built up in extraction. Wiping the same surfaces again won't shift it.
2. Grime that's visibly building up, not just present
Some buildup between deep cleans is normal — around door handles, skirting boards, the edges of a kitchen. The sign to watch for is buildup that's visibly getting worse month to month rather than staying level. That's usually a sign the current frequency isn't quite keeping pace with how the space is actually used.
3. Carpet stains that a standard vacuum can't touch
Spot-cleaning handles a fresh spill, but older stains, general greying in high-traffic routes, or anything that's worked into the fibres needs proper extraction cleaning — a different job entirely from the daily or weekly vacuum.
4. Air that feels noticeably stuffier than it should
If a room feels stuffy or stale even with ventilation running, it's often dust and debris built up in vents and grilles rather than anything a surface clean would fix. Worth a specific look rather than assuming it's just "old air".
5. It's just been through something out of the ordinary
A refurbishment, a big event, a burst pipe, or simply months without a proper deep clean while everyone focused on the day-to-day — any of these puts a building past what a standard visit is meant to handle, and it's worth resetting the baseline with a proper deep clean rather than trying to catch up gradually.
A standard clean maintains a baseline. A deep clean resets one that's slipped.
What to do about it
None of this means your current cleaning is doing a bad job — a standard visit genuinely isn't built to fix these things, by design. If any of the above sounds familiar, it's worth a one-off deep clean to reset the baseline, then reassessing whether your regular schedule needs to shift to keep it there.