Today, to avoid walking on a thumbtack that had fallen on the floor, my little sister took a red sharpie to the carpet and drew a circle around it, "so that way, everyone will see it." FML
But just because her sister didn't step on it and drew a red circle around it doesn't mean op didn't step on it because well that's the point Of this fml
Little sisters looking out for people? Mine would have put the tack there, and if nobody stepped on it, pretend to do so herself and then blame me for the tack being there. Idiotic events like this are a daily occurrence for me.
Op could also give the carpet a haircut and cut the red pieces down if nothing else works. I've removed black nail polish that way, but it was only a small spot and didn't go very deep.