If you mean can you bring in your own boxes or like a storage bin you'll have to put your items in them. At Winco you pck your own bags. Like at Cosco they use boxes for bulk items if you ask for them. Hope this helps.
Do you mean take your own container and fill it from the bulk dispenser. Then take it to the check out? I would say no because bulk items are sold by the pound and your container would be an unknown to the checker. You could just as easily get the bulk in a plastic bag then transfer after purchase. Also ask your question to the checker.
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