Instead of the pouch, try using a small box to carry the rats around. A shipping box that is just going to be recycled, maybe a plastic storage container you have lying around, extra large Kritter Keeper, etc. A lid is a plus to keep the rats contained. Cut out some holes to allow for air flow if needed. Once they're more used to you and being handled, you can slowly introduce them to the pouch.
Can you can set up a rat play pen in the same room as the cage? It doesn't have to be huge. You can buy small animal playpens or DIY one. There are lots of DIY rat play pen ideas online.
Can you can set up a rat play pen in the same room as the cage? It doesn't have to be huge. You can buy small animal playpens or DIY one. There are lots of DIY rat play pen ideas online.