B., I TOTALLY sympathize with you on this. We JUST went thru this, ourselves. And it was a nightmare!! We have 2 cats, both indoor kitties. We just moved in this house in April, so we think the fleas may have been in here already, or possibly brought in from outside, on one of us.
Anyways, I'm not kidding you, we flea bathed them, we did the drops on them, we did the foams, the powders, the sprays, the collars. We bombed. And bombed again. And again. We washed everything (real fun taking all of our laundry to the laundrymat with an infant). We bombed a total of 5 times, and the final time, my husband used TWELVE cans of bomb throughout the entire house, including the basement. Then we locked the cats in the basement.
I can say we have no fleas in the upstairs or main floor of the house anymore. However, I had decided just last night to let the cats come back into the main house, and I found a flea on one of them. ARGH!!!! So we're going to have to, yet again, treat the cats. But she doesn't look infested, as before. I only saw one.
We found out that their eggs hatch every couple of weeks. So we had to bomb, then a couple weeks later, bomb again. The eggs are hidden every where in the house. Make sure to spray the baseboards, under the furniture, anywhere warm and dark.
I hope you can get relief from this soon! I know how frustrating it is. Especially when you have kids. My infant son wasn't bit, but my 6 yr. old was COVERED in flea bites. I felt so badly for him, and was so embarrassed about it. I had to explain it to his teacher (they go swimming at school), so that she knew what was going on. The nurse practitioner my kids sees, said that fleas are especially attracted to kids for some reason.
My feet and ankles were covered, as well. I wish you much luck with this problem!