I suggested a small amount of vinegar as a last resort. Small was the operative word as in a couple tablespoons of diluted vinegar around each plant at the most. The problem with spraying is that the foliage will burn if the vinegar comes in contact with it.
Lots of water to flush the soil is still the best option. The bleach has been there for at least two months - it is breaking down into salt (table salt to be exact) and water. That's what's causing the root burn.
Adding vinegar will speed up the process but the end result is always the same: Salt. Flush the soil with lots of water.
