I haven't had rats in a long time, really since i was a kid. At that time, sadly looking back, I didn't really look into their care as much as I could have, and based a lot off of what the pet store said...but I have had lots of pets since then and learned that my choice at the time (the fiesta brand rat food ) wasn't the best. So what is a good brand of food for new rats? And what should I feed adults? Preferably something I could easily find in a pet smart or petco. And also, what fresh food is good and what isn't? Thanks!