I guess I should have been more precise. I was questioning how often most people sanitize their tanks. I believe there are those that never sanitize but I think I will go with the once a year.
Thank you all for the input.
I have heard that three axle trailers are very hard to back and turn. The axles fight each other. Don't know this from personal experience but have heard it more than once. I pull a 33ft 5er and there are places I can't fit either, especially older state parks in Calif and Oregon.
I have done it twice, the last time about 3 weeks ago. As said earlier a lot of up and down. I pull a 33ft 5er. I would really like to drive it again sometime in a car so I could enjoy the beautiful scenery.