Methonds of intro'ing rats

I'm getting 2 new boy rats soon
And i want to introduce them to my exsisting group of boys which is...

Bob , Dylan , Benny , John , Michael , Roo , Alec , Robert , and also Kiwi

Done the baby/old/teen smilies to give you a guide on their ages too

How do I go about popping them together guys?

I think I've read about a 'carrier method' being the best

I tried this method with 5 boys and 4 nwebies... original boys 8 months and newbies 4 months. Just a weeka go I put them all in a cat carrier and then let them walk around the bed then put back into the carrier, went for a drive to get a takeaway and back home again.

By the time we got home all boys were !!Asleep!! and seemed fiiine!
I put them into a 'cambridge hamster cage' overnight, it's an all right size.

When I got up they were all asleep once again and not all together, but peacful and happy

They have been together for a short while now so fingers crossed

I just saw this and think the carrier method is one of the worst... shoving rats into a small space is basically to scare them into huddling together. Unless I have lone rats that need company or think a group would really get on well together I don't intro mine.