Deep Insect Boilies become predominantly from insects and naturally occurring Microorganisms made from lakes and rivers.
Insects and microorganisms are quick and easy to catch for carp and are therefore natural Food source of the carp.
Organic "fast food" , Protein and Fatty!
Particularly Koi carp can not leave the fins of it, as they prefer to be used in breeding farms Fed insects become.
An excellent one Boilie some of them Surprise catch can bring with it.