I have been using Folex for many many years , since it was invented actually. The inventor lived near me and went around the neighborhood door to door saying he could remove any spots on your carpets to show you how good it worked. So I let him in and wellah , a few pet stains gone in no time. That was back in the late 60's in San Diego. I have used Folex ever since with many cats and fur balls and doggy spots and kids with flu you name it Folex gets it out . Even pasta sauce , chocolate ,coffee spots on your good clothes. I keep a bottle in the laundry room too. You will never need another spot cleaner.