We just moved into a house.
The last owner kept a rubber-backed carpet in front of the toilet.
Something from the back of the carpet
discolored the vinyl floor covering.
The the floor covering is whit-ish.
The stain, ( in the shape of the carpet) is orange.
So far, my wife's tried detergents, and bleach....
... doesn't touch it !
Is my only recourse gonna be an exacto knife ??