First time using it was to remove black magic marker of carpet( Worked very Well) A customer was surprised how well it took out stains, so she gave me a Jacket that had ball point pen stains on it and I carefully blotted out all stains.
I love being able to add this my cleaning solution without worrying about effecting it's ability to clean, and not having to add additional moisture and time by spraying odor counteractant after cleaning. They're extremely economical and customers absolutely love them.