I think we may be turning the corner in our flea battle. Last night Ryan threw out some stupid old carpet tiles that the previous owners had put down in the basement, and ripped some old junky carpeting off the bottom step of the staircase. I don't know why I didn't think of that before. I did ask him to toss the carpet tiles earlier in the day, but somehow I guess I thought the carpet on the step (which was really really old and crappy and only on that one step for some reason) was immoveable. Not Ryan - he attacked and vanquished that carpet!
About an hour later, he went down there barefoot and only found 2 fleas on him. Prior to last night, there would've been at least 20 within a minute. So, I think this is progress! I have not been brave enough to reproduce his experiment today. Maybe after the girls are in bed and he's back home.
Another good sign - I haven't had to use the hydrocortisone except for one time since we came back from the hotel Thursday night. Please let this trend continue!