While trying to avoid spending my money at WalMart (and growing progressively more certain that they were the only store in town selling the soap I wanted), I found myself in Home Depot staring at this:
All it took was a scan of the ingredients to convince me. I'm not foolish enough to think that "everything natural is good," but check out the list:
It doesn't specifically advertise itself as something to use in Bissell carpet cleaners, but I threw caution to the wind.
Should you be interested, the results: