Depends on what you think is causing it. You could try spreading chalk powder with a broom,so the powder gets in between the joints of the boards. Talcum powder is ok but a bit perfumy,ballroom powder is easy to get and doesn't smell.
If your sub-floor is timber,it could be caused by insufficient nailng of nogs between joists. If floor is on ground level,you may be able to access sub-floor from under house.
Squeaky floors may alert you to kids sneaking in past curfew, but they've got little else going for them. Annoying floor squeaks, common in many homes, typically occur after the house has settled and flooring lumber has dried out and shrunk. As you walk across the floor, boards rub against each other or slide against nail shafts to produce a cacophony of squeaks and creaks.
Loose subflooring -- both solid-board and plywood types -- will also emit high-pitched chirps.
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