After reading Rhen's solution to springtime fleas, I thought I'd post what worked for us.
We battled them about a month ago. My poor Troubles was the only one getting bit...but just everywhere! I began adding apple cider vinegar to the cats wet food: 1 tsp per can. That causes them to be an uninviting host, and they didn't seem to mind the new flavor.
Then I sprinkled borax on the carpet, brushed it in with the broom and kept the kids out for an hour or two. A thorough vacuuming later, no fleas! I repeated the carpet treatment the next week after any eggs hatched, and we haven't see one since. Some people use a salt and borax mix on the carpet, to dry the flea eggs and prevent any hatching, but I though the salt might damage my metal vacuum, so I refrained and repeated.
I'm the blessed wife of My Honey of 14 years, and Momma to eight wonderful Lambies aged 13 and under. We live in Central CA, and use Ambleside Online for our curriculum. I'd love to meet you , so browse a while and feel free to leave a comment!