S.H.
I have had pet stains that won't come out! I tried all the cleaners at the stores and nothing helped. As a last resort I used Spray and Wash. I know its for clothing, but it worked WONDERS on my carpet!! It also took out the color that was left from nail polish. I used a whole bottle of remover to get most, but the spray and wash took care of the rest! It did not stain my carpet or remove the color!! Good luck!