G.A.
I have used Pet Smart solutions but the other day I got from Home Depot a 7-One spot remover and it seems to be just as good. My carpets are almost white a very light grey and every thing the dog does shoes which really makes it easier to know and clean. I also have a home cleaner and clean the carpets almost weekly but was told that is not good for the backing on the carpets. I have a dog and Home Day Care and even not wearing shoes in the house gets dirty. I would try that spot remover and steam cleaner. Test first a place in the closet then proceed. Good luck. My carpets look great after 6 yrs but I grabbed a bleach instead of the carpet stain spray bottle and now have a couple of light spots in the hall. I have extra carpeting and some day will have a section replaced. Good Luck G. the Home Depot was about $8 and Pet Smart $20.