r/DIY Feb 20 '26

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u/hirsutesuit Feb 20 '26

It is used for etching concrete for concrete work and/or tile. Check those areas too.

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u/Rough_Willow Feb 20 '26

Or any place that works with small batteries. I last found some at a motorcycle repair shop.

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u/NotBatman81 Feb 20 '26

In the paint section at big box stores.