A simple rule of thumb
Under 10 people: weekly or twice weekly. 10–30 people: three times weekly. 30+ people or client-facing spaces: nightly. Restrooms and kitchens drive the decision more than desks.
Signs you need more frequent service
Overflowing trash by midweek, restroom complaints, and dust visible on conference tables all signal your schedule is too light.
Want exact numbers? Try the pricing calculators.