Milo should never be fed whole to cattle. The grain should be packed with a tractor in bunker or trench silos in a fashion similar to silage. The top should be covered with plastic and weighted down to seal it and prevent air flow beneath the cover in case of puncture. The plastic cover should be applied within one or two days after filling to prevent deterioration to the exposed grain. This may necessitate covering the silo as it is being filled.
Rapid filling is important for best preservation in non-sealed silos.
Conventional upright silos must be strong and in good condition for storage of high-moisture grain. A silo that has been used for grass silage should be strong enough for high-moisture grain. Consult the manufacturer of your silo if you are in doubt about whether it needs extra bands for reinforcement. Doors may need to be sealed with plastic strips. Seal the top of the silo with a plastic cap to prevent spoilage.