I used J2 cleaning for a carpet cleaning at a house I was redoing. The carpet was a mess and there were some gums and bleached spots. They did a really good job on cleaning the carpet it looks almost like brand new. So any time I need a tough carpet clean in the future, I will be sure to use them.
I am using them on a tile clean job next. i am pretty sure they will do a good job as well so I'd be looking forward to using them on any other future jobs.