I've had three generations of gerbils who've eaten this food. It was originally recommended to us by the small animal rescue where we adopted our first family of gerbils. It is a well-balanced product designed specifically for the needs of gerbils. Our vet told us that contrary to the way pet food is packaged, gerbils and hamsters do have different nutritional needs, and most gerbli/hamster foods are formulated primarily for hamsters, not gerbils. Unfortunately this food is not carried by many vendors in the US anymore, and I'm afraid I won't be able to find it anymore.