Copper sulfate drain cleaner | |||
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Copper sulfate drain cleaner. For some reason copper sulfate is sold for use in keeping drains clear. I think it's supposed to inhibit the growth of roots that may be working they way into underground clay drains. This brand consists of fine needle-like crystals. Source: Farm & Fleet Contributor: Theodore Gray Acquired: 28 June, 2009 Text Updated: 28 June, 2009 Price: $8 Size: 2" Purity: 40% | |||
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