Typically, to be effective, preservatives require handling the grain.
You’re trying to get the appropriate amount on the grain.
My feeling is that it’s actually easier to run the grain through a dryer than it is to apply the preservative appropriately.
The grain dryer also is a more economical choice.
A larger natural aeration system may work depending on where you are located.
Reprinted from Grain Journal July/August 2020 Issue