I have purchased both the PetLab Urine Stain & Odour Remover Ready To Use Formula & the concentrate, & The Healthy Habitat Refill Bundle, The PetLab 2L Eco Carpet Cleaner Shampoo, & the Stain & Odour Refill Bundle, and the results of all of these have been absolutely incredible! The urine remover spray totally removed all smell and urine from the carpet, on both new stains and old stains. After a few applications as per instructions on the old stain, and only one required on the new one- the stain was totally clean. After a few days, I then used the Carpet Shampoo in my Bissell carpet shampooer, and it was remarkable! It lifted all the dirt, and removed so much pet hair from the carpet- My carpet smells amazing and fresh! The team at PetLab have been so inredibly helpful with all my email enquiries, with my questions about how best to use the urine stain remover. I am so glad I discovered Pet Lab, and will be definately purchasing more in future! A+++ products and service- thank you team !! -Michelle .