Between growing, walks and training sessions Mason has also been watching us clean our carpet. His male hormones told him to mark his territory, which included the carpet and corners of furniture. We joked that his elective surgery of neutering was really life saving surgery. To make a long story short we found that OdorMute works the best on pet stains and smells. We also highly recommend the Bissell SpotBot. Thankfully Mason no longer feels the need to mark his territory.