4, the answer is 4.
I did feel a bit silly at times this year, throwing a load of laundry in the washer and then washing diapers in the sink. Though in a way it was like multitasking and it all got done faster in the end. I feel like my napkins and my big kids' night time super-undies (cloth overnight 'pull ups') got cleaner this week because they were in the washer without a dozen diapers. Thinking about that makes me want to keep hand washing my flats - they really do get just as clean, and as i said last year, it shaves hours and hours off the time my washer is running. In order to make the loads smaller, i would have to wash diapers in the washer EVERY DAY and that would leave not enough time for regular laundry.. or I would be doing laundry pretty much all the time. What felt extra silly was when we got poop on a diaper cover and could have EASILY thrown it in a load of laundry that I had just started, but instead I waited until later to hand wash it and then it wasn't dry in time to use it for bedtime. (I had other covers for bedtime, so no big deal)
Ok. now that i wrote this out, just like last year - hand washing diapers (part time or as is actually needed) is sounding like a real option that i am actually considering. I think I will leave my wet pail of borax-y water under the sink for now and see if i use it.
And PS. once again, blogging is harder to keep up with than the actual challenge. I even skipped a day (no day 6, ha! didn't notice, did you?) It is much harder to fit in quiet time to think and type than it is to throw some diapers in the kitchen sink.