I don't wash mine with anything most of the time. I've been keeping them covered with neosporin or lanolin as much as possible.
To add to my worries, I weighed her tonight (I have a baby scale.) and her weight gain hasn't been great this last week. She was steadily gaining 1oz/day for the last few weeks and the last few days that's cut more in half. That's still technically a trend of adequate (averaging 1/2 oz/day) but with the boob woes I'm paranoid that she's not transferring well. Especially since I've had 2 clogged ducts in 2 days. She's been able to clear the clog both days within a couple of feedings, but you know.. I'm paranoid.
(Let me add that I'm having a TERRIBLE time with postpartum anxiety. It's really, really severe. I started meds a month ago but had to double my dose today because I've been a mess.)