I have been using this product for at least three years, purchasing this product through our local marina to remove the light mold and mildew that comes with storing my boat over the winter months. Last year I left the area for one year and placed my boat in long term storage outside, my mistake. When I returned this year March 2012 and retrieved my boat from storage, then removed the boat cover it was covered with mold and mildew from front to back.I did not hesitate to purchase this product again. Light mold and mildew will vanish after a few minutes, then wipe with a damp cloth. I did have to treat my vinyl seats twice due to the highly concentrated areas of mold and mildew that existed on my seats.Packaging is not very good on this product however with Amazon, a roll of bubble wrap and a cardboard box. One Container was damaged and leaked during the shipping process.For some reason the sprayers failed during use and had to transfer the product into a different container for use.I am rating the product five stars, two stars for Amazon and packing and shipping.