It’s a pretty nifty system. A small bag, which contains the chemical, is used during each trip to the toilet. That bag is sealed and dropped into a larger bag which is hung inside the toilet. At the end of your trip you simply dispose of all the bags in a trash receptacle. You can choose from 12-, 50- and 100-pack waste kits. All kits include toilet paper and hand sanitizer.
The PETT system is available at most camping-supply stores. For more information, check out the manufacturer’s Web site at www.thepett.com.
Other options include the “pickle bucket” or a large can used with kitty litter.