How about the video of the Indian woman spitting in the pot she was cooking instead of adding water!!!! Or the man shooing the mice away from the food he was packing up - the mice ran OVER the food!!!!!
That wasn’t a mouse...!
https://www.ams.usda.gov/selling-food/product-specs
note what the food specs address and don’t address. The don’t list is very important. contanimants are mostly missing from this list.
https://www.ams.usda.gov/sites/default/files/media/WheatStandards.pdf
here is wheat standard.
You cannot have perfect food. The mice are going to run over the pile and eat some of it. But the good news is animals don’t usually excrement near their food source.