I have used several different products and none of them work that well. Bottom line, is there a product that will subdue the offending groover?
So a groover is a river toilet. On multiple day river trips you need to pack your solid waste out, liquid can usually go right into the river no problem depending on where you are (ask the local ranger). Originally it was an ammo can that you just dumped your solid waste in... directly. It was called a groover because when you were done and stood back up you had two grooves running down your backside (from the ammo can digging in). today we still use an ammo can to store it in, but we have a modern seat on it and a plastic inner container in the can. We also paint them white so they bake less in the hot river sun and smell (slightly) better. Also you know to not put anything in a white ammo can. Or open them on the river.
I have used a couple of different products and have yet to be impressed. I am hoping for an answer of "I have used X and swear by it, it might not be perfect but it's leagues better than anything else" Ideally the product will also be allowed to be dumped in septic systems and not just sewer, but if not I will haul my solid waste back to civilization if I don't have to smell it.
I have used Blue stuff (RV), bleach, kitty litter, and Pine Sol.