try and keep in mind that no 2 rats are the same, you will ALWAYS get one that is more timid than the other and completely different personalities.

P@h bought rats are no different personality or integration wise than a breeder rat, i've had both and had no unusual problems with either type. Some of the quicker and more friendly rats we've had have been p@h rats, our current breeder rats are super timid and we've had them for about 6 months now, and one is a right biter! but that's because she learnt it from our mentally challenged rat who was never friendly to us.

Your rats are new to you and their cage, it will take them time to get use to everything. Your rats aren't biting you cos they think you have food or becuase you feed them from your hand, they're nibbling you because they are scared and are trying to make you go away without forcing you to fight them and possibly damaging them. It's ratty body signals, you'll get to know these more and more as you interact with your rats.

The best thing to do as already mentioned is to sit still with your hand in the cage and just talk to them or talk to someone else in the room, read a book out loud, get them used to you, show them your not something that will hurt them. ferret your hand about their cage but stay away from where they are, go to the food bowl pick up a nugget and hide it somewhere, then go back and do it a few times etc that sort of thing pretend your a rat.

Don't think that just because they don't want to be picked up that they aren't friendly, alot of rats don't like it, remember they rodent code "danger from above!" you pick them up from above and lot of rats just never get used to this. instead offer your hand or arm (preferably with jumper on for better purchase) and you will probably find that most prefer getting on you under their own steam.

biting wise, keep your hand clenched in a fist when you put it in the cage, A it'll hurt less when they do nibble and B will seem less scary to the rat as a closed fist can't pick you up. if they bit you say 'ow' move your hand in a slow jerk but don't move your hand away, it shows that you've been hurt but aren't going anywhere but aren't going to hurt them either.

to get them used to your smell when your not there i suggest used socks that you don't want any more, go to the gym wearing said socks and then stick them in the cage :P yummy!

some rats take longer to acclimatise than others, don't stick them back in the shop or give them away or they'll get a complex. Rats are JUST as intelligent as a 2 year old human, and act just like dogs and are as trainable as both of these.

YOU have to be patient, learn the rats way of doing things, don't push humanisms on them, let them teach you how it's done at their own pace and you'll get far more enjoyment out of them.

__________________
This is not a game of 'who the fek are you'.

Not a single gram of fek shall be given today.