Fleas and adopted kitties almost always go together!

Yes, combing the kittens is the best idea until they get older. However, you can do something about the fleas in the house and carpet as long as you get everyone (human and animal) out of the house. Flea bombs actually do work, in my experience. Follow the directions, especially about the number of bombs to use and the time to wait. Don't overdo, it won't help.

You can bathe the kittens in warm water (no soap), which should also help get the fleas moving so you can find them - a basin with water up to their tummies should be enough - hold on to them carefully - and watch out for tiny SHARP claws. They will whine and cry, but they are waterproof, except in their ears. Pour water all over, and towel dry in a warm place. Don't try to wash more than one at a time -

The fleas like to hide in warm safe places - especially on the neck, tummy and back legs by the um, er, output areas.... comb them three or four times a day - there isn't any instant answer for this!

Give them lots of love and tickles and sweet talk while you are doing this - it will help you bond with them too! Good luck to you all!