One thing that can damage your plumbing on your coach is what you put down the commode. If you aren’t using RV safe toilet paper products, you are using the wrong stuff.
When we see packaging that says “flushable” it makes you feel better right? I picture a fancy lab and smart people in white coats that have done all the necessary research to make sure that my plumbing can stand up to their product. While that may be true in a normal household, it certainly isn’t if you own an RV. The packaging MUST say ‘RV or Marine Safe’ on it to be safe.
Now if you own an RV that has a macerator pump, you have an advantage. We still do not recommend using non-RV safe paper products. This will ensure the longer life of your plumbing! I found this Camco toilet tissue at Walmart for pretty cheap.