Well, I live full-time in my 32 foot Wanderer Wagon in an RV park in Arizona. I've been here a little over a year. I had issues with the tank plugging up and had to manually remove TP from the bottom of the tank. Real fun job.
The guys on either side told me to use RidX and a septic safe TP. So, after getting the tank emptied, I used a box of it and IT WORKED GREAT! There is only me so I have to dump about every two weeks. I clearly notice the difference--- TP and other waste is broken down. The liquid coming out of the tank is a much different color than before RidX. Actually, I mostly use generic RidX from Dollar General as it's half the price of the brand name and works just as well.