This might be a little off subject but I've noticed that where 15 years ago I could store food items in plastic containers that now the only mouse/rat proof container is metal. Bought 30 gallon plastic garbage cans to hold the chicken feed. Within a year I had to replace the plastic cans with metal. It's gotten so bad that if I leave plastic beverage container partially full the mice eat holes in it.
It's cost a bit but I now have all of my food items stored in metal cans, I have 30 gallon metal garbage cans full of sugar, flour, rice, etc, to keep them edible.