Read reviews for the PETT Toilet System by Phillips Environmental Products as submitted by your fellow paddlers. All of the reviews are created and written by paddlers like you, so be sure to submit your own review and be part of the community!
The PETT toilet is lightweight, sturdy, compact, and easy to set up. It utilizes "WAG" (waste alleviation and gelling) Bags which can be legally and safely deposited in regular trash receptacles.
I have used my PETT system for four years on river trips involving as many as twelve people. If the WAG Bags have to be transported for more than a couple of days, you should bring a military rocket box or some other container that is absolutely airtight to transport the bags; otherwise, odors will almost certainly pass through the plastic bags. That is the only significant drawback that I have discovered.
Overall the PETT is more user-friendly than systems that have to be flushed out at dump stations. The PETT toilet and privacy tent are available at most river and camping retailers such as Northwest River Supplies, Campmor, and Cabelas. I found that prices vary a lot, so make comparisons before you buy.