If you have a septic system, have your tank pumped out in the near future and make sure it is working properly. This is really important. Waste must be buried deep enough to prevent animals from digging it up and also to prevent contamination of water supplies. Again, it is important to not just have a shovel, but to know where the water is. Although waste disposal is one of the things that first comes to mind when talking about preparedness, it's easy to forget.
Photos are available on their sites.
I talked with these folks and this system was originally designed for mineworkers because chemicals would be hazardous in the mines. So it was designed to be simple and effective without chemicals. Wastes and odors are sealed and then moved down into the base of the compartment automatically. I think this is great for families with young children, the elderly or handicapped people who need something easy yet substantial. Or just for people who want something normal but not want to go to the expense of composting toilets.