Toilet Chemical... what do you mostly use? We have lately used Eco-Save. We like scented, just because of the scent. The dry is just right for boon docking as it last so long, and it lubricates valves. A nice thing is it can freeze, shake it, works fine.
First saw it used at a campground dump station. A newbie had a sun damaged blue 'stinky' hose that broke, and lost it's content all over the ground. It was a real hot dry day. The CG owner raked and shoveled any solids and flushed away in the bathouse.. He then put about an ounce or so of Eco-Save and some water in a spray bottle and spray covered the area. I watched the area that weekend and never a hint of odor or problem. I like it because it is not chemical based. They don't even recommend it is used ntil there is waste in the tank. Doesn't seem to be mass marketed, but available at a lot of campgrounds. Their web site list where its available in your state.