Just a thought ... back in "the day" (1960's), at that private camp ground my parents went to year after year, the only toilet on the entire campground was an old fashioned "out-house" ... today called a "pit toilet" for all you young'ins out there!
Now that little house stank! Especially in the middle of July and August when the temperatures got near 100 at night! The owner of the campground used raw lye (power) and just powered the dickens out of every square inch of that old outhouse and then just kept dumping it down the "hole". Well, the lye power definitely killed the smell, but the lye on your southern end when you sat down caused for a quick swim in the adjoining river (if you get my drift there).
I suppose if you could get a bag of lye you could "powder" your RV bathroom until this country get's out of the "deep freeze!" I wouldn't walk barefoot in there though, or you'll probably find you have no need for foot callous remover any more ... actually, you may not even need shoes any more!
