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4meAndyou · F
Patti is correct. Descalers that you buy in the stores are just citric acid, which is a mild acid that won't etch your kettle. Vinegar is also an acid.
cherokeepatti · 61-69, F
use white vinegar, it's probably cheaper than descaler
Thevy29 · 41-45, M
I'll try that. @cherokeepatti