Star millings isnt too bad... A lil high in fat but work.... I used this 1st before switching to western millings... And I have found they actually prefer the westen millings got about 60 rats and been on new food for 2 months and still a few of star millings in the hoppers almost like tey are picking around them.. Thts not to say its bad... I was also getting an average of 12 per litter while using it annd now its up to 13-14 ish