That is so strange! I bought Woolite's and it sucked! I guess all carpets and pet stains aren't created equal! I love Woolite for delicates, but, my old RB kitty, Dusty, was getting sick a lot at one point, and, I bought some of that, and, it did not get the yellow out of my beige carpet. So far, Clorox Oxy Clean is doing the trick, but, I'm just not sure about the odor. I can't smell it, but, it's bothersome that the pets still can. And, I went back to Dog General, and, there's a comment about Resolve. I'm not sure if the poster was referring to ALL Resolve, or just the ones specifically with stain blocker or Teflon. Check that thread out if you want their explanation. This thread is helpful!