Where I am, #300 straight corn lasts about 8 days, #300 of corn and protein mix lasts 12 days. When spring blooms are at full throttle, I slow down on supplemental feeding through middle of summer. During that time, I raise the ratio of protein to corn for antler growth. And slowly transition back to the 33% protein to corn as fall green fields are coming up. During the pre-rut and rut, I go primarily corn just to attract the does, etc. But, that is much more supplemental feeding vs the spin feeders as mentioned above. Deer will consume as much as you are willing to give them in a matter of days.