Domestic cleaning products seem to be very poorly labeled. In fact in most cases we have been unable to find active ingredients, dilutions rates, what the product is supposed to be used to clean and more importantly instructions on how to properly use the products.
So our tip or in this case recommendation is the Power Force chemical brand from Aldi. These products are well labeled with directions including how to use them and very importantly the amount of time the product needs to sit (dwell) for it to be most effective.
They also seem to work.