My carpets are so gross with 3 kids carpet cleaner - Awesome! Should've done before/after pics, but I had 3 almost black stains on my off-white carpet and they came up beautifully! Had to do it twice, but they had been there a LONG time and were really ground in. 2cups hydrogen peroxide and 1/4 cup baking soda. Put in a spray bottle squirt- scrub- vacuum!
Also on these boards
From 10 Ways Your Bathroom is Making You Sick Avoid chemical grout cleaners, which can burn your skin. Make a paste of baking soda and hydrogen peroxide instead, and let it sit on grout for 30 minutes before scrubbing and rinsing.
Natural Kitchen Cleaners: What’s Under my Sink
50/50 of water and vinegar, water and hydrogen peroxide and a container of baking soda...all the natural cleaner you need
Homemade Natural Carpet Cleaner