I did a tile job last week and noticed their leather was very dirty (didn't realize HOW dirty until I started cleaning it though). So I asked them if they would like me to clean it and they said sure. I started on one cushion using some leather cleaner I had and quickly realized I was not going to have nearly enough because of the amount of layers of dirt, oil and grease (12 years worth, family of 4 with a dog and the pieces were by the kitchen). Plus the leather cleaner I was using was not doing a great job, I had to literally scrub the leather so hard with the rag that after the whole set (couch, love seat, chair & ottoman) I would have probably tore some rotator cuffs in my shoulder.
So anyways I decided to try some Groutmaster mixed at about 1/2 oz - 3/4 oz per qtr. gal. warm water and sure enough it essentially melted all of that crap right off. Even still it took a few applications and quite some time because it was so thick from all of the years of use and abuse but in the end so much easier and better results than the leather cleaner I had.
Not saying this is something I would do every time of course but in this case the situation called for it and paid off. The customer was super happy with the outcome and so was I.
So anyways I decided to try some Groutmaster mixed at about 1/2 oz - 3/4 oz per qtr. gal. warm water and sure enough it essentially melted all of that crap right off. Even still it took a few applications and quite some time because it was so thick from all of the years of use and abuse but in the end so much easier and better results than the leather cleaner I had.
Not saying this is something I would do every time of course but in this case the situation called for it and paid off. The customer was super happy with the outcome and so was I.