What are the differences among "TSP" cleaners?
TSP stands for tri sodium phosphate . Anything not containing a lot of phosphate is not TSP ,so it can be anything. I would guess some kind of detergent. Detergents formerly contained significant amounts of TSP but now it is politically incorrect . So I get TSP and add a spoonful to the dishwasher for each load . It is also very useful as fertilizer in the yard but watch your pH level. My soil happens to be very acidic so TSP is a win-win fertilizer in my yard.