Can I use powdered chlorine bleach in the bleach dispenser?
No, you cannot use powdered chlorine bleach or color safe bleach in the dispenser. The dispenser is for liquid chlorine bleach use only. Never pour more than 1 cup (250 mL) for a full load, and always measure the bleach carefully.
From the official Whirlpool 3363564 Top Load Washer manual, page 13
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