I had been using a product that was not very safe but worked fast. I liked using this product as its safer but I did take longer for it to work. I found it was best to spray it and leave for awhile and come back and the hull was clean. At least this product is safer than what I was using. Overall I like the product but it is not the fastest method to remove scum from the hull.

I've used this product in the past and I really like the ease and effectiveness of it. I would without a doubt buy it again.

The product works excellent.

I use it in my car wash,I use it to clean the flashing light tubes.

Rust looking hot tub looks like brand new

Great product and easy to use,