Hagen Hamster & Gerbil Staple VME Mix Diet. Hagen Hamster & Gerbil VME (Vitamin & Mineral Enriched) Mix provides a tasty selection of the finest seeds and nuts that hamsters and gerbils would forage in the wild. Small animals get all the benefits of freely eating the delicious food they love, plus they get all the nutrients they need for a healthy and long life. Hamster & Gerbil VME Mix contains the appropriate amounts of protein, fat, fibre, vitamins and minerals to help keep small pets in excellent condition. Available Size: 1.13 kg (2.5 lb) / 2.26 kg (5 lb)