Walmart is selling ( and locally had tons of stock) of gallon jugs of generic Pool Chlorinating Liquid, 10% Sodium Hypochlorite. Normal bleach is 5.25%. If you were to dilute this 50:50, you would have 2 gallons of bleach. If you can swim in the presence of this, I would think that it can be used, diluted, anywhere you would use bleach as a disinfectant.
I found it in the lawn/garden/outdoor section and there must have been easily a hundred jugs. Diluted, it costs you a half or a third per gallon what laundry bleach does...which is sold out everywhere locally.
Couldn't find a URL for it at Walmart.com, but found the Brickseek for it
Do not use it undiluted
and be careful in pouring it out to avoid splattering. Use eye/hand protection and old clothes when doing so, and do it somewhere where any splash won't be a problem. Use funnels, cold water for dilution, make sure that whatever container you use for dilution is clean and there are no other chemicals involved. The usual disclaimers apply to this suggestion. Be careful and informed. OTOH, these are all protections you would take anyway if you used it in your pool. More precautionary information here [ndsu.edu]