Police with assault rifles patrolled entry points to Boracay Island on Tuesday just days before a six-month shutdown and clean-up of one of the Philippines’ top tourist attractions. President Rodrigo Duterte had branded the renowned white-sand resort a “cesspool” fouled by dumped sewage and imposed a temporary ban on visitors that is due to take effect Thursday. Officials have warned the island’s drainage system is being used to send untreated sewage from hotels and restaurants into its turquoise waters. Workers said they did not mind security checks, adding they were more worried about their jobs. The closure threatens the livelihood of 17,000 hotel, restaurant and other tourism workers, plus about 11,000 construction workers.