I use borax only, it cures very well, roe stays bright much longer and borax does not have
any non-natural for fish roe smell and taste, like sugar and salt doing.
Always greater success, IMHO.
Borax you can find in WalMart, between detergents.
Quick tip for separation roe from skein: cold water hardens the roe, see above message.
After that just rub skein over the badminton racquet, clean roe falling through the net.
Very easy to get it done with no hussle.
There is another way to cure roe - do not separate from skeins, just cut to longer stripes with around 1/2 x 1'' in section
for future cutting to desired bait size, lay the cut skeins in the borax, spaced 0.5 inch apart, shake some extra borax over the top.
Keep it drying for from few hours to one day untill seins are a little bit rubberized, but still soft, turning over every few hours,
put into jars covered with borax into the fridge. Finally make desired size bait cuts just befors fishing trip.
It works sometimes much better than roe bags, believe me!