we are truly sorry this hasn't worked for you, every stain is different and may require more work than what this can handle, as one of the best selling stain removers in the industry everything does have limitations, we are more than happy to help if you can contact us with pictures via email, we will get the technical team to look at these and provide the best solution for your stains with a way of correcting them. Thank you for your business we truly appreciate it Team LRC send your email to help@leatherrepaircompany.com