How to clean cork floors<br>Sweep regularly. Use a soft-bristled broom, a dust mop, or a vacuum cleaner with a soft brush attachment. Depending on how heavily you use the area, repeat 2-7 times a week, or whenever you notice it getting dusty.
sweep cork floors once every fortnight
the context explicitly states sweeping cork floors at least once a week, it follows that sweeping once every fortnight(14 days) is not consistent with the recommendation
( z1 sweep :frequency 1 :ARG1 ( z2 floor :mod ( z3 cork ) ) )