I think it is humorous that y'all think that leaving scent while filling a feeder will prevent mature bucks from visiting it....I really do!
It shows how little you know about animal behavior.
There is a thing called 'Conditiioned Reaction'.
Don't overhunt the area, climbing trees every day and slinging arrows at every Doe that comes by or shooting every buck that walks through and guess what.....
That same mature bucks becomes conditioned to the act of filling the feeder and associates it with fresh groceries.
But, I prefer folks to keep up the 'it spoils em away' and 'it makes em all nocturnal' talk, though!! LOL
You are saying all mature bucks will react the same??
Conditioned behavior for 3 months on and 9 months off?
Let's face it, the feed will only be there in the vast majority of the cases for 3-4 months. How long will it take to condition mature bucks with this pattern?