LuckyLab there are a couple of easy things you can do. Flea combs are excellent to find fleas. If you comb once a day for a week and do not find a single flea, then the odds are pretty high there are no fleas. If there are fleas, I think you will find them the first time you comb. I keep a small container of water next to me so that I can drop or shake the fleas in the water to keep them from jumping off the comb before I can kill them.
Also, it has been my experience that if you give them a bath, you will see at least 1 or 2 come off in the rinse water. (Rinsing in a bath tub works well for seeing the fleas.) Not necessary to use a flea shampoo, just any gentle shampoo appropriate for puppies will work.
