Placing copper rings around the base of certain plants repels snails and other insects. 1800& #39;s copper blanks that farmers placed inside animals water troughs to kill algae and bacteria. Place copper penny ( before 1982 is 95% )in birdbath kills algae.
Wine barrel with copper rings. 1750 Copper wearing can.
.1860 Turkish copper/brass Brazier. Copper tape around potted plants for bugs. .
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