(1) For the purpose of carrying out an initial inspection or a compliance inspection a Pesticides and Toxic Chemicals Inspector may enter premises or a facility and exercise any inspection powers if—
(a) the inspector shows proof of identity and the occupier of the place consents; or
(b) a warrant is issued under section 53 authorising such inspection.
(2) The inspector may be accompanied by any person whose expert knowledge the inspector considers necessary in the carrying out of the inspection.