I have tried so many products on pet stains; some have worked to a certain degree, but this is the best odor remover that I've ever used! It doesn't take effort, either! Just spray is on - re-treat the area, if necessary and you are done! It doesn't have a fake scent that masks the pet odor and make you think it is working! All you smell after using the product is a clean smell. You can't beat the guarantee, either!