Thank you for your hospitality
When I am going to hunt with friends, we are used to think loud with each other in the way, so..
When I am randomly walking through a park, although with the usual food sources, a popcorn smell in the air works for me like a magnet.
The idea for baiting is only for the environments that, although plenty of rats and food sources, they barely come into the clean shots spots during the hunt time.
With the environment smell they are used to, it seems to me their paths are random, and some 'special' smells could motivate the extra steps into the right direction.
Just in order to learn, I would not clean up, just leave the baits at some spots to see if the 'popcorn trick' actually makes a worthwhile contribution.