After receiving notification of a challenge, a facility has six days to hide the evidence before inspectors are admitted.

CENTERFORSECURITYPOLICY: Chemical weapons treaty quicksand

Some have speculated that the programme may have been dispersed to hide it from the inspectors (though this suggests that inspection was containing the threat).

ECONOMIST: Weapons of mass destruction

As long as they own less than that, parent companies in Japan can hide ugly things from tax inspectors.

ECONOMIST: Worse to come