Construction dust behaves differently from ordinary soil
Dust from earthworks and construction is finer, travels further and settles on surfaces that ordinary office soil never reaches. It appears on window sills, the tops of partitions, light fittings and horizontal surfaces well away from the entry, and it recurs within a day of being removed. Increasing the frequency of ordinary floor cleaning does very little about it.
The tasks that actually help are different ones from the usual list. Entry matting and the first stretch of floor need considerably more attention, external and internal glass needs a shorter interval than usual, and horizontal surfaces above desk height need regular attention rather than being left to a periodic cycle. Targeting those specifically achieves far more than a general increase in the frequency of everything in the tenancy.
