hardened washing powder + mould ? — MoneySavingExpert Forum
Dec 10, 2007·The formula for automatic washing powder usually includes an 'anti-caking' additive. This is to help the powder flow from the box.....but even a brand new box can have lumps:rolleyes: ....depending on how damp the atmosphere is. I would be tempted to break up (hack at it) the solid mass and do a test wash with a small amount of the powder.