After the lifts were done I got together a few things for the bleaching: the black/white 'negative' side that had been left over from making the lifts, a tall container for holding the bleach dilution, tweezers for holding the negative as you dip it in the bleach water, a sable hair paint brush, a rinsing tray, latex gloves and paper towel. Also make sure you do this in a ventilated area as bleach fumes are toxic.
I used a little toilet bowl gel cleaner (that has bleach in it) diluted with water. Others have suggested using liquid bleach diluted with water or Mr. Clean magic erasers and water. The first time I mixed this I used fairly warm almost hot water, the second time I used luke warm water. The negative bleached and rinsed faster when I used the hotter water.
First I rinsed away the white layer using warm water. Then I took the corner of the negative with tweezers and vertically dunked it in the bleach. I did notice that my sharp tweezers scratched up the corner a bit. I wasn't bothered, but if you are, perhaps just use your gloved fingers to swish the photo around in the bleach. After about half a minute I took the negative from the bleach and put it in my rinse tray, gently brushing the surface layer away the bleach had eaten through, to leave a dark green layer. I repeated this twice. The next layer was a lighter green, the one after that was more of a cyan green. After I was done bleaching and rinsing the negatives, I let them dry over night and brought them to work for scanning.
If you'd like to see another example please view Beau's flickr site,