I’ve tried a variety of different bait additives over the years and you can never know for sure what works and what doesn’t. It’s very much a confidence thing. I can say that I’ve the greatest confidence in Lo-salt as an additive, it doesn’t mask the natural scent of the bait, except for making it taste saltier to us, how fish perceive it I don’t know. The only testing I’ve done is to compare what I catch, particularly on a day when it’s hard, to what others are catching around me. The problem with that is that you may end up fishing next door to Clive’s old mate who sat by the waterside without a hook for fear of snagging up, and If you couldn’t catch more than him, then you would be in trouble, lol.
Fish do seek out certain minerals to supplement their diet. Carp anglers sometimes put rock-salt in their bait or in the area they want to put their bait in and the carp are attracted to this salt and actively root about searching for it. Ages ago on here, I think it was Laguna who mentioned that potassium salts were a good attractant and they were part of the recipe in some of the additives that he sold. Lo-salt contains potassium chloride, so I thought I would give Lo-salt a go. It’s cheap easily obtainable and with the exception of living baits can be added to almost anything. I’ve tried various other additives over the years. Garum masala powder, garlic, hemp oil, and loads of other things. Sometimes they seem to make a difference and sometimes not. The only one that I found that actively put fish off was some sweetcorn that had betaine in it. I had bought three tins from a tackle shop and when I had run out of the normal JGG I opened a tin of that. Twice the fish were really having it and as soon as I chucked some of the betaine laced corn in it killed the swim stone dead. Tin three went binways.
Matchmen are a good barometer in deciding if additives work I would have thought. All sorts of liquids and powders are sold to enhance baits and specialist ground baits contain all sorts of additives, from pigeon sh1t, to molasses, fish meal, ground hemp, breadcrumb and god only knows what else are added. If plain crumb worked as well why would they bother with the far more expensive alternatives.
A club I joined years ago go acquired a small estate lake that hadn’t been fished for a decade at least and most probably even longer. The club sent a memo out to people interested in fishing it, they said that the lake was an unknown quantity and all they really knew was that it was badly silted, had a small head of wild carp and some decent tench. Also, for the first few weeks fishing would have to be booked to limit numbers but the first day would be committee members only. Interestingly there was a note saying natural baits were expected to fish best, as these fish had never seen a boilie or a pellet in their lives. I booked for the second day, found a nice swim and chucked out a handful of sweetcorn while I set up. First cast I was in to a decent tench and I had a field day. In the first newsletter the secretary said that on the inaugural day it fished poorly. Now the point I’m making is that sweetcorn isn’t really a natural bait, Sure it’s grown naturally but a fish is unlikely to ever come across this as part of their normal diet and they switched onto it almost immediately. Interestingly tinned sweetcorn has sugar and salt in it. It makes you think about what a natural bait is. Discounting anglers baits, a fish may see the odd worm if it’s washed in to the water after heavy rain but they would never make up a major part of their diet. Same for maggots or pellets. They may see the odd piece of bread if people feed ducks and swans but otherwise not. Yet some of these baits are almost an instant success. it’s also hard to tell when the fish are feeding avidly if any additives are working, as when they are feeding strongly and competing amongst each other they will take anything. When it’s harder maybe a stronger smell, aniseed or geranium oil will give the edge. Maybe a yeast solution sprayed on the bait could enhance it. It wouldn’t have to be bread as bait. Some carpers ferment; nuts and particles to enhance their attractiveness.