Food baits and their application started in the UK with an angler called Fred Wilton way back in 1968. Fred's concept was to put together a bait that was so nutritionally superior to any other bait that the carp would prefer it to any other bait. The theory was based on instinctive drive - that a carp had the ability to recognise a good source of food after eating it. By giving the bait a distinctive label in the form of a smell, the carp would learn after steady introduction over a period of time to associate that smell with the good source of food, and it would then seek it out in preference to nutritionally inferior baits or natural food.
The theory had massive impact, and Fred and his companions had enormous success by literally emptying the lakes they fished.
Since then baits have become more refined, but the basis of the theory still lies with Wilton. The Big Fish Mix I use is a more advanced bait than Wilton's and more nutritional. It also has more complex smell/attractors. I have been using this bait on one water for three years and over that period of time have probably caught 90% of the fish - some several times over. If I continue to fish that water I will still continue to use the same bait and I've no doubt it will keep catching very well. This pattern has been repeated on every water I've fished over the last twenty years. The secret lies in continually introducing the bait in quantity over a period of time - and not changing it. During a summer/autumn I will probably use something like 60kg (dry mix) of boilies on one water. By using that degree of bait it will never lose effectiveness since the carp are eating a lot of risk-free food and therefore do not develop a caution when they come across the hookbait.
I've tried to explain it clearly - but I'm not sure if I have!
Any further questions/issues I'm happy to discuss.

Nice to hear from you Buckeye. Food baits may not be necessary now in the US but in years to come as the numbers of carp anglers grows and pressure on lakes increases, then the food value of baits will become important. Incidentally, the bait company I am a consultant for, Nutrabaits, is starting to distribute some baits across the US I believe.
[This message has been edited by Paul Selman (edited 02-07-2000).]
[This message has been edited by Paul Selman (edited 02-07-2000).]