http://www.miniscience.com/projects/PotatoElectricity/

is the penny 100% copper?

http://www.extension.umn.edu/distrib...re/DG7561.html
" Copper is an effective barrier to slugs. Copper strips or tape sold specifically
for slug control can be purchased from garden suppliers. Caution: The sharp edges of
some products may cause safety problems, especially for young children. Copper
barriers are most practical for small gardens and containers.

Diatomaceous earth (tiny fossilized skeletons of ancient aquatic diatoms) is
moderately effective as a slug barrier. When slugs come in contact with diatomaceous
earth, it is abrasive to their skin. Diatomaceous earth is most effective when used
in dry conditions and has little effect when it absorbs moisture.

There are several pesticides that may be used to supplement the above nonchemical
tactics. Iron phosphate (e.g. Escar-Go, Sluggo), applied to the soil as granules, is
a less toxic bait for slugs. Iron phosphate is mixed with a food product that draws
slugs to the bait. Once slugs consume this bait, they stop feeding and die three to
six days later.

Chemical slug baits often contain metaldehyde (e.g. Deadline, Defender), available as
a granular or liquid paste. When metaldehyde is eaten by slugs, it destroys their
ability to move and digest food. Apply it to the soil near slug-infested plants.
Metaldehyde is more effective during warm, dry weather. It is best to apply
metaldehyde after a rain storm but when sunny weather is predicted.

Copper compounds (copper silicate and copper sulfate) are effective repellents. They
are usually mixed with water, then sprayed on plants. Copper products repel slugs but
do not usually kill them. Do not spray copper compounds near baits; slugs will avoid
baits contaminated with them. "



"Benign Vanilla" wrote:
Forgive me...but this sounds like folklore. I checked around google, and it
seems to be common knowledge! How strange! Don't you need two types of metal
to create a current? Weird. You learn something every day. Anyway, I am off
to collect slugs. I plan to power my pump with them and some pennies.

BV.




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