Peggy each year I put a couple of boxes of baking soda (in small plastic bowls) in many of the low spots in my boat. It seems to help keep the smell nice etc. I normally just throw these small bowls of baking soda away. But I was wondering if I should save the baking soda and put into the holding tank. Would this help the holding tank? Deodorize it maybe? Help clean it out? What do you think?