What do you do with additional hamsters when they start breeding?

This is what I think you should do. You shouldn't touch the babies or the mom of the hamsters will eat them and that is not a good feeling for you. What you should do, though, is to seperate both of the hamsters like you said because it has been said on a website that they will breed again within 24 hours! That means you will be crawling with hamsters in a matter of weeks. I wish you the best of luck with the new hamsters and here is a helpful website I found (Scroll down until you find the one about hamster having babies) This is the link I referred to for this. It will help you out. http://hamsterific.com/faq.cfm

I used to have 20 hamsters at one time due to the continuous breeding. I have actually two suggestions based on what you think suit you better. 1) If you really love them a lot, and you love a lot of hamsters, you can actualy get those tupperware ("multi-storey" cabinets) to house the hamsters. And you can purchase those tunnels for them so that each storey is linked to the rest. Or if you have a yard, you can let them live on the grass. Just provide the overhead shelter and keep the area clear of cats. This way, you don't need to change the bedding cuz' it's in nature. But you have to fence in all the way below so that the hamsters don't dig and end up outside the cage. 2) Keep them separate before they multiply into too many. I know some pet shops actually will accept in hamsters and give you S$2 credit to buy their stuff. While separating them from young will save you the problem of overcrowding in the future, you must also take note that at times, when hamsters grow big, they might not be able to live in a crowd. So some hamsters would be bullied, while some will initiate fights. And females tend to want isolation more than males.

Petshops will buy the hamsters. Sell them those which had grown up already. Petshops get their stocks from raisers like you. Try doing it and you will find that hobbies will yield you some extra income.

well, as soon as they're about six weeks old, get those boys away from those girls. keep the girls in one cage, the boys in the other, and don't let them fraternize or you will have a population explosion! in my experience, hamsters are cantankerous, although if they are littermates, they may accept roomates.

I have two male roborovskis and they are good companions, they dont have to be seperated. u could try out that option

Are you sure they aren't "tribbles"... (from Star Trek) I used to have the same problem with fish - guppies in particular. The local pet shop became my outlet, and I received a few dollars a month for my promiscuous group of guppies. The owner took the first batch gratis... simply to check the health, possible problems with inbreeding, etc. After that he was happy that I took care of them and they were healthy and so forth, then he began paying. He would even call at times to see if I had any extra when he was running low. You won't get rich, but you can get rid of the ones you don't need.

Oh my goodness, when my girls first got hamsters we had little hamsters in a few days. LOL I didn't know anything about hamsters and apparently the one my daughter picked out was already expecting. So we had about 13 hamsters. At one point we had close to 24 hamsters. We gave most of them away to their friends from school and we even donating a few to their classrooms at school. It took us a few weks but in the end we found homes for all hamsters. The do reproduce pretty quickly so you really need to separate them all asp. I could never tell male/female so I separated each of them.