"All bleach decomposition is dependant on temperature. For any given temperature, the higher the strength, the faster it decomposes and the higher the level of oxygen and chlorate formation. In summary, for every 10° C increase in storage temperature, the sodium hypochlorite will decompose at an increased rate factor of approximately 3.5." From Powellfab. My understanding you would be dead on Everett except it is degrading constantly just things like temperature or organic matter/the higher strength SH that we use make it degrade much faster then say clorox.