01-31-2015, 05:41 AM
Diatomaceous Earth doesn't work when it's wet, so it's not very effective outside in Puna. It supposedly does work again however, once it completely dries out, assuming it hasn't been rinsed away.
Copper is supposed to be an effective slug and snail barrier, apparently when they touch it, it gives them a mild electric shock. Slugs can however raise their bodies over it (in effect, stepping over it) and commercial copper strips for this purpose aren't wide enough for large slugs. Also, copper doesn't work when its tarnished (starts turning green) so it has to be cleaned/polished periodically.
Copper is supposed to be an effective slug and snail barrier, apparently when they touch it, it gives them a mild electric shock. Slugs can however raise their bodies over it (in effect, stepping over it) and commercial copper strips for this purpose aren't wide enough for large slugs. Also, copper doesn't work when its tarnished (starts turning green) so it has to be cleaned/polished periodically.