Yeah it does make a difference what they are used to, you cant just chuck them straight on a raw diet. Unless that is you want a very bad poo problem, lol. These things have to be introduced gradually. Find out what they have been used to first and then come back on this thread and let us know. There are some knowledgeable peeps on here with regard to nutrition but I think the background is essential in order to advise you further

Bet you cant wait to get them little fur balls home!