Biosecurity Importance of grain storage hygiene against pests For more information, refer to the GRDC stored grain hygiene and structural treatments website by SA Farmer Published June 27, 2022 Link copied! Copy failed! GRDC grain storage extension specialist Ben White says that grain spills around sheds and silos at this time of year can supply a feed source for vermin and insect pests. PHOTO: Ben White Updated September 22, 2025 10:52 am | 7 days ago Link copied! Copy failed!