I've seen some pre-made mixes online, but I'd rather only look into them as a last resort.

I doubt that baking soda and a vacuum would be enough for these filthy carpets. What about very dilute Dr. Bronner's?

Your thoughts and suggestions appreciated-

How about Mrs. Meyers? I got mine at Bartell Drug Store, but my grocery carries it too. All natural and the smell is heavenly. You can unscrew the cap and smell each "flavor" to see which you like best right in the store. You might want to phone or write them and ask if it's good for carpets. I use it for everything else, but haven't shampooed carpets since I discovered it.

Well, not everything else; for the toughest cleaning jobs I use Bio Green Clean (all natural, non toxic), bought over the web. It's a great cleaner, but expensive.

Here is a web site that gives economical homemade carpet cleaner suggestions: The Dollar Stretcher.

...or Charlie's Soap All-Purpose cleaner. You can use 1/2 the amount of CS as commercial rug cleaner recommended for you particular shampooer.

I have used their Bac-Out product and can't say enough good things about it. It has removed many stains in my life :)

Carpet & Rug Shampoo
Biokleen Carpet & Rug Shampoo is safe on all washable fibers and is gentle on carpet backings and pads. Safe for most types of surfaces, cleans and rinses effectively with hot or cold water, and leaves no harsh residues or fumes behind. Works with household or rental carpet shampooers and even commercial extractors.
� Removes tough stains and odors without toxic chemicals
� Safe to use in homes with children and pets
� Great for high traffic areas
� Perfect for home and office environments
� Kind to those with chemical sensitivities and allergies

Please let us know what you try and how it works!

Someone also told me that they used Shaklee's Basic H2 (although this you can't find in stores). I've not tried it myself but the acquaintance that did was very pleased.