People tend to get hung up on the word 'bleach'. It's still just a liquid chlorinator, the same stuff as the pool stores sell, in a different concentration.

For some reason, the phrase:
"Add the liquid chlorinating solution to achieve shock level concentration"

seems different from the phrase:
"Pour in bleach until your chlorine is up to shock level"

but they are really the same.

Liquid chlorine, bleach... 12%, 10%, 8%, 6%, 5.4% - they're all just sodium hypochlorite and water.