Thanks for the info gentlemen.

Option number 3 -

Found a 50 pound bag of "Dry Bleach" by franklin technologies for $47.00

MSDS says:
*Sodium chloride - > 50%
*Sodium carbonate - >30%
*Sodium percarbonate - >10%

Can anyone interpret this for me?

MSDS is here:
http://69.149.235.133/images/1/pdf/P710162MSDS.pdf