Yes, I was skeptical. But I was tired after scrubbing with everything else...and WOW, yes I am a total convert.
First we used the scrubby thing and after that was an amazing success, the spray, which btw may be my fave product EVER.
Though, after using the grout cleaner [again, NOTHING else worked] maybe that's my fave...
ALL these products work amazingly well. I'm definitely team Home Heroes now!