(1) Before a warrant team enters premises in an inspection area or clarification inspection area, the national inspector executing the warrant must:
(a) announce that the warrant team is authorised by the warrant to enter the premises; and
(b) give any person at the premises an opportunity to allow entry into or onto the premises.
(2) The national inspector need not comply with subsection ( 1) if the national inspector believes, on reasonable grounds, that immediate entry to the premises is required to ensure that the effective execution of the warrant is not frustrated.