Hi Ben,
I purchased these for my own personal carp fishing, having used them on one 36hr session on my local small 2acre club water which mainly holds mirrors and a handful of commons, I was graced with the last original stock in a mid double common which is around 44 years old, he hadn't been caught for 2 years and the Fishery Manager was swaying to believe he was no longer with us, on my session there was 2 other anglers, who both blanked I'm convinced it was the natrapel which gave me the edge, I used the pellet in pva bags with only a small distance 8 wraps and a couple of spombs every 3 hours did the bites.
Kind regards
Rick Campbell.