I was surfing around the 'net and stumbled across this little study on the best method for recovering a cell phone after it has gone for a swim. Although this study was done with cell phones the physics of successfully drying out a waterlogged electronic component are pretty much the same. Bottom line is there are other household options which may work better than rice!
U.M.
http://www.gazelle.com/thehorn/wp-content/uploads/2014/05/Water-Damage-Prevention-and-Recovery.pdf
U.M.
http://www.gazelle.com/thehorn/wp-content/uploads/2014/05/Water-Damage-Prevention-and-Recovery.pdf