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Updated 2 Nov 2026
We’ll say whether to buy now or wait once the cheapest store has 10 recorded prices.
Flush your way to freshness. Duck Action Duo toilet blocks fight stubborn stains, freshen your bowl, and colours water blue so you get a visible clean, every time you flush. Duck Action Duo In Cistern Block features slow-release formula to help your toilet sparkle, for up to 900 flushes per pack.
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