My rodents? I feed a combination of two things. I feed about 50% lab blocks. I have the local feed co-op make them for me and the formula that we worked out is based on Mauzri lab blocks. The other 50% is a mix that I make myself. I buy 50 pound bags of grain and mix them together. One bag each. Black oil sunflower seeds, Cracked Corn, Milo, Wheat, Oats, 16% Lay Pellets (16% protein), Turkey Grower pellets (20% protein) , and 50 pounds of Dry Cat Food. The finished mix has a crude analysis of 14.2% protein, 7.0% Fat, 8.9% Fiber. It costs me $0.21 per pound for the mix, I usually end up with about 400 pounds.