I was a bit dubious at first as you often are with these new "wonder" products.
However, I tried it out on both showers to get rid of the horrible mould in silicone, it worked really well and got rid of it. I didnt know of any other product that could do this, so I was so pleased to find a product that would fix it. The only thing is, I dont know if it returns or is gone for good. I hope for good. Time will tell I guess. Awesome!!!