No, it's not toxicity.

( Esme Weatherwax I swear on my tash it's daycent hash, Tue 16 Jun 2009, 18:36, archived)

There you go:
www.groworganic.com/item_PBR650_SnailBarr_Copper_Barrier_3_x_20_.html?welcome=T&theses=4979255

Can't be arsed looking more.
( Esme Weatherwax I swear on my tash it's daycent hash, Tue 16 Jun 2009, 18:37, archived)

no no no
it's because it stops them reaching 88 miles per hour
( spacefish bong!, Tue 16 Jun 2009, 19:16, archived)

I'm going to see if I can get some of that copper tape,
it looks useful for all sorts of things.
( Moon Girl Technologies horrendous beanbag, Tue 16 Jun 2009, 18:38, archived)

It's hard to get here, but most garden centres in the UK seem to have them.

( Esme Weatherwax I swear on my tash it's daycent hash, Tue 16 Jun 2009, 18:39, archived)

You'd probably just make bombs with it.

( Dr. Shambolic je suis charlie, Tue 16 Jun 2009, 18:41, archived)

:(((
Terrible bullying.
( Esme Weatherwax I swear on my tash it's daycent hash, Tue 16 Jun 2009, 18:44, archived)