brake clean
The EPA recently announced they were finally completely banning "trich" which was already under heavy regulation. This was the main ingredient in many cleaners of that type for decades. In the Navy it was nicknames as "trich," "trich 1 1 1 " or "safety solvent" because it did not burn. (However, just like refrigerants, fire and it produces deadly phsgene gas, as welders using breakeclean have discovered.)
EPA also banned "perk" used in dry cleaning.
On a positive note, for the first time in my life, I tried "simple green" (the green) and also have not used, bought bought the heavy duty stuff which is ? violet ? Anyhow, I saved my bathroom tub, vanity sink and counter, and the toilet. We wil not even have to remove the shower/ tub, just cut out and re--sheet rock it. These are "not quite clean" yet, they look better now. Took me several 1 hour scrubbings!!1
In the photo below, you can see the nearly black walls above and below the tub. They were "light blue" EVERYTHING looked like that before I started cleaning