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A six-pack coffee- and tea-pot cleaner (Kaf-tan KT-1) made in the USA and designed for percolators, dripolators, carafes, decanters and teapots. Owners report it removes tough coffee staining but stress thorough rinsing.
Brew Rite Coffee Maker Cleaner is an 8 oz (240 ml) descaler listed for coffee makers and praised by owners for removing mineral build-up and coffee oils. This review walks through real-owner usage, safety notes, and a checklist before you buy.
Urnex Cafiza (566 g) is a powder backflush cleaner listed as NSF certified for metal compatibility and OMRI listed. Owners report it cleans espresso group heads, carafes, and travel mugs and that a little goes a long way.