B.W.
We use Charlies Soap! We started using it when we switched to cloth diapers. It contains natural ingredients, has no smell, leaves no residue, and rinses clean.
we've used it for random things too like getting oil out of hte concrete in our driveway, stains off the counter, even rust out of the tubs and sinks when our water softener took a dive. Make a paste and use a scrubby brush or sponge to work out those kinds of stains.
I can't say enough good things about it. My clothes have never been cleaner, if you need a stain remover you just make a paste out of the powder.... a bit of powder with a few drops of water and rub it in, then wash as usual.
Plus its super cheap.... $13 for a bag that lasts for quite some time. We use it full time (in our front load washer) and one bag lasts me a couple months. You only use one teaspoon per wash load, less if you have a smaller load. My oldest has eczema and this washes clean and leaves no residue or smell, so its great for his skin.