There are many critical observations, which pointedly indicate that the safest and most environment friendly method for destroying the molds and insects is a high scale Ozone fumigation of the grains. The most attractive reason is that Ozone does not impart any toxic residue, unlike the conventional pesticides, mostly in the tablet form.
In this standard method, ozone in gaseous form is injected inside the silo containing grains including cereals, in a counter current flow. Detailed examination explicitly illustrates the concentration of Ozone needed inside silo to get rid of all such menace. For storage outside silo, even injection of ozone gas at a particular concentration through lateral pipelines below the stack yields the same results.
The sole purpose is to get rid of the molds or fungi that come from invisible spores in the environment and small insects. With profuse Ozonation, both these can be summarily removed. The dosage of ozone depends on various conditions like quantity, specific gravity of grain, infection load of the grains, type of enclosure or environmental effects.