I think your Mold Off^® is a great product. I first used it on my Crownline deck boat’s vinyl seats. I use it when cleaning and also periodically spray it on and leave it on the seats as a preventive measure. Your product has kept my 10 year-old boat seats looking like new. However, now I also spray Mold Off^® on my boat dock and on my outdoor shower porch with a garden sprayer, as well as on the stepping stones I use for paths around my lake place. Mold Off^® keeps everything nice and clean and eliminates slippery mold and ugly-looking stains. As you know, I use it so much that I only order the Marine Concentrate these days. Thanks for coming up with such a great product!