I just washed mine out when I did my Stylus Photo 830 then let them dry out thoroughly before refitting them. A very messy job though. I did mine in the utility room sink. Don't try it in the living room!
Used the SSC Service Utility program to reset the counters.
http://www.softpedia.com/get/System/System-Miscellaneous/SSC-Service-Utility.shtml
ChicksFan, June 2012