Bird Feed Storage After trying everything to keep pesky rodents from stealing my birdfeed, even an ultra heavy duty polyurethane container, I have finally found the PERFECT storage container for birdfeed or any type of seed. I purchased the GrubPack after reviewing many products online. Along with it being 100% rodent proof, the really cool thing about this company is the owner actually answers the phone to discuss your needs and if his product will offer a solution. He did and it does. Highly recommend this product. I purchased (2) or the large mesh bags, they are very large and you may actually get by with the medium size.