When i Carp fished regularly, i decided to try Tiger Nuts, they're a great bait, but i made sure that i did a lot of research on them first.
Luckily a guy at dave's of Middlewich Tackle shop, explained everything to me, about Pre soaking and suggested that i have a look at the HINDERS web site.
It wasn't until i was comfortable with knowing that i had minimised any damage being caused to the Carp that i then used them.
Boillies are a great bait, but like a lot of things, they get misused.
Some lakes even ban Hemp and other nuts, not that they're a **** bait, but people don't know how to prepare them properly and there is a risk of damage to the fish if not prepared properly.