Do you drink chlorinated water? That's what bleach is, just much more concentrated. It is a common method for rendering water biologically safe (kills bacteria) in emergency situations.Is that safe? Using bleach on food?
Safety is just a matter of concentration, how long you use it during the sprouting process and how many rinses you have after you stop using bleach. When using bleach, be sure to only use one that has no additives- dyes, scents, etc.