so i live in australia, and there are not many good rat products out here! i can only find one brand of rat food (nibbler pet rat and mouse food)- it contains oats, sunflower seeds, pellets. it seems pretty boring for them and Cas just eats the sunflower seeds and nothing else. so is it ok to feed them cereals that are made for humans? things like puffed wheat, cornflakes, all-bran, wheet-bix, ect? (obviously i'd steer clear of ones high in sugar!) and what are some other yummy foods that they'd like?