GREENVILLE, S.C. —

Costco's new shopping policy, which allows executive members exclusive access to stores from 9 a.m. to 10 a.m. during weekdays, will officially take effect on Monday.

Back in June, the warehouse chain allowed shoppers with executive memberships to enter the store from 9 a.m. to 10 a.m. during the week, meaning other customers had to wait until after 10 to shop. Latest Forecast

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The company said the policy was not strictly enforced.

But now Costco says its grace period is ending, and the policy will take hold on Labor Day.

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