Oh, you are breeding for feeders. In that I see no problem with it at all! Everyone needs to eat thats for sure. I used to breed feeder mice & rats for my ferrets, dogs & cats.
Well ok, you don't really want unhealthy rats as your pets are going to eat them but you don't have to be :as careful" about breeding them as you would if they were pet rats.


You should probably feed them a light dog food, puppy/kitten/reg. adult food has too much protein in it for rats.

I wouldn't bath them too often, maybe a few times a year only if needed. but for the most part, most rats are actually very clean. If yuo can bath them less than that thats even better. Most common is the dirty tail, a simpl tail bath is all that is needed. They can catch colds & other illnesses easily and like I said they are usually keep themselves pretty clean so the less baths the better. They do sell rodent shampoo, though it is kind of hard to find. Ferret, kitten & baby shampoo's are all fine to use too.
You don't want them to actually sit in the water, unless they like it. But if you do, just an inch or so is all you need. What I reccomend is to use the kitchen faicet sprayer or just hold them under running water. Luke warm is fine. Make sure to dry them off well.
I would not bath the face, just like most other animals I reccomend just wiping the face down with a baby wipe or moist wash cloth. Too much water on the face can cause some of it to be inhalled into the lungs, causing major respitory problems & other illnesses. And the shampoo would probably sting the eyes. Water in the ears can also cause an infection if not cleaned out properly.
Blow dryer, NO. Even low heat can burn such sensative skin. Just towel dry them well.