Just a note about why bleach solutions are used, from our local licensing agency's disinfecting/sanitizing handbook:

Why is bleach generally recommended over other products? Bleach is recommended over other products because it is inexpensive, strong and relatively simple to mix. Bleach is safe to use in day care in the concentrations recommended. The compound breaks up very quikcly and the reactive part is only available for a brief period of time and then forms products (salt and water) that are no longer reactive and are safe if ingested and safe for the environment.

Bleach is easily broken down by light; that is why bleach is sold in solid colour bottles and new solutions must be made every day. Once the bleach is broken down by light and has lost its colour and odour it is no longer useful.

Hope that helps ease your minds a little. My thought is, however, if it's leaving bleach stains on your kid's clothes you may want to check that they're using the proper solution (2 tablespoons of bleach to one gallon of water).

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