The research has shown that the "weakened strength" bait will work so it makes you think. Have we been getting more rats per block with the existing bait or have we be buying bait that was stronger than it needed to be for all these years?
The weaker bait only works if there is no other food source, as they have to consume more to have the same effect as the standard bait.
I bit the bullet and went on the course, had a good day out and came home with lots of ideas from the other participants as we all had learnt effective ways, in different environments, for baiting rodents.