This had the effect of poisoning the water to such a degree, that many of the other species of fish started to develop sickness and died, leaving mainly carp in the water. At a later stage, the carp also were heavily effected. Various water treatments and a BAN on the use potatoes were implemented. The carp population was significantly reduced and those that now remain dominate the lake. Of course un-eaten boilies and other baits may produce similar degrees of water poisoning, but although I have no understanding of decomposition processes, I have the impression that potatoes act as a very active medium.
Triggers are any substance added to a bait designed to attract the fish.
However, the overall feeling , seems to be that their effectiveness as atractors when compared too flavorsis inconclusive. This may be an advantage or disadvantage , depending how long you intend leaving your baits in the water. The reaction in water may be totally different as you are dealing with a totally different medium . Most flavours also have natural and synthetic extracts added which must help on the attraction side of things . These liquids are normally found in bodybuilding shops, health food shops and fishing specialist shops.