this is from dec/jan 2006 issue of Traditional Bowhunter:

16 ounces 3% hydrogen peroxide
16 ounces distilled water
1/4 cup baking soda
1 ounce unscented liquid soap

mix all, except soap, in a one gallon container and shake well. let it settle a few minutes and add the soap. mix gently without causing too much sudsing. put into a spray bottle and use

i haven't tried this yet, but it is very similar (if not exactly the same) as a recipe i remember seeing on this forum last year.