Quote Originally Posted by Bellabob View Post
When I get my colony going I plan on feeding them O'le Roy dog food mixed with black sunflower seed.

That's probably WAAAAAY too much protein for rats. It'll be hard on their kidneys, and you may find you have a lot of sick feeders.

Try mixing it with oats instead. You can get a 50lb bag of oats at a feed store for $10-$15, and it should be 50% ish of their diet.
You can also buy barley in 50lb bags at about the same price.