We aren't full timers. We have the larger one, the double standard model. It lasts, depending where we are and the hardness of the water, between 10-24 days at a time. It stands up on my slide out tray in the bay while traveling. I hold it from using by wrapping a short black rubber bungee cord, and fasten the two hook ends to screws in the slide out tray rail, about 18-20 inches apart. It has never fallen over. It sits on the ground outside the coach when we are in a RV Park. I could probably plumb it to make it permanent, but you have to unhook all of that to re-generate it, so I don't.