Laundry Detergent/ Methods of getting clothes clean

I've been struggling for a while to find the best method in keeping clothes clean. Wondering if anyone has any ideas on what to use besides chemical ridden laundry detergents? I've heard of soap nuts and essential oils. Thinking this might be the best way to go for now? I'm using a conventional washer and dryer since drying on a clothesline isn't very efficient in humid Florida. Also, I'm curious to see if anyone here has created a solar powered dryer, or at least knows how to build one?

There are a few discussions in the Frugality forum that deal with making your own laundry soaps. I'm about ready to try a recipe found here. http://www.permies.com/permaculture-forums/6224_0/frugality/cheap-laundry-soap-recipe-

I've not found anything good yet, I just use a low toxicity powder from the health food shop.

I tried soap nuts but wasn't impressed. Essential oils are not good for the environment in many ways (growing as well as anti-bacterial impact. They're a refined chemical too).