Dear Dr. R.V. Shrink:
We are first time buyers of a new Class A motorhome. On one of our first trips we met up with friends and family for a weekend camping trip. It turned out to be four nights of boon-docking. On the way home we had a horrendous smell in the motorhome. My wife was giving me the stink-eye and I thought it was her. After playing the blame game we finally did some investigation and discovered it was sink stink. We never smelled it while camping, but as soon as we started down the road it was as if someone threw a stink bomb into our new rig. We were conservative with our water use, but I think my wife took too many showers. We are hoping that grey and black water odors are not going to be an ongoing problem for us. Is this something we should stress about or is it just part of the learning curve we are experiencing?
--Smellbound in Springfield
Not to worry. You will discover many little idiosyncrasies as you learn to trim the sails. This one is easy. Dump the holding tanks when they get full. Your new home on wheels has been plumbed with sink traps just like your home. Once the tanks fill, the gray water will find its way past the traps and begin to smell. Usually it will back up into the shower stall first. Holding tank deodorizers will help distinguish occasional odors that escape while flushing or dumping. I would suggest you always use black water treatments and occasionally treat your grey water tank also. There are shelves full of stuff and they all work great. After four days of boon-docking you may want to consider personal hygiene products also. It’s not always the sink drain.
--Keep Smilin’, Dr. R.V. Shrink