Copper Sulfate Large CrystalsA versatile farm chemical:Pest control snails and slugs Pond cleaner algae, mosquito larvae Natural fungicide mildew Antiseptic household germs Organic Bordeaux mix blight, apple scab, leaf curl,…
or simply grow lovely blue crystals.
Usage: For pipeline systems (toilets, etc.) 1 cup down drains every 2 weeks or 2 cups per month.
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