How funny that you ask this! I just wrote a blog post about natural household cleaners and talked about safe, non-toxic, effective mop-water recipe!
http://knockedupknockedover.wordpress.com/2011/05/15/home...
I tried the swiffer wet-jet, but it left this film on my floor. It was weird and gross and the floor felt dirtier than ever! Blegh.
The recipe I came up with left my floors feeling really clean. Love it! Here it is:
■2 gallons of hot (VERY HOT!) water
■1 Cup of white vinegar
■1 squirt of Dr. Bronner’s magic liquid soap
■A few drops of Tea tree essential oil
Totally non-toxic and the tea tree oil acts as an antibacterial, anti-fungal, anti-viral. Great stuff tea tree oil.
And it's cheap, too! All you need (aside from the stuff in the recipe) is a bucket and a sponge mop. Easy!