I recall my mom talking about getting a stain out of the carpet and she mentioned the cleanser, which at the time I had just learned about as having carbon tet. (Don’t recall now what it was and google didn’t prompt my memory).
She said something like “This stuff just does wonders, but you can’t find it ANYWHERE anymore - and the bottle is almost out”. It’s probably been in the house since the sixties! I tried to convince her to get rid of it - but no way!
This was years ago though - but wouldn’t be surprised if she still has a drop or two of it. At 93 she’s VERY frugal with her stuff. I’ll have to give her a call. Even though I can’t remember what it was I’m sure she does! (Weird how some stuff gives some folks cancer, etc. and others just keep on ticking.)
Carbona?