Most of the cleaning "kits" have a "cleaner" (usually phosphoric acid), a neutralizer (usually MEK) and a liner. I used a "kit" the first time and the results were OK. After that I started using muriatic acid to clean, baking soda & water to neutralize and Redkote for the liner. Spectacular results every time.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.