I used this product for heavy duty stains in my living room carpet which a professional cleaning service was unable to get completely. However, with the 2 samples included with my purchase of the Pet Pro Carpet Cleaner, this product did a fantastic job! The stains that were on the carpet for at least 5 years have disappeared. During this pandemic, being able to clean my own carpet(s) lessens the stress of a person coming into my home to do the service. I would recommend this product--the Pro Max Carpet cleaning Formula + Deep Clean + Antibacterial Carpet Formula. Finally, the Pet Pro Carpet is a fantastic cleaning machine! I highly recommend all these products! +