Hi Suzanne,
Thank your your question. Here is the surface preparation instructions, thus no need for a cleaner. "Substrate should be clean and free of dust, dirt, oil, grease, paint, curing agents, concrete sealers, loosely bonded toppings, loose particles, and any other substance or condition that may prevent or reduce adhesion." Then merely apply the Refresh Colorant. Full instructions and product information are listed under the Specifications tab on this product page.
Thank you,
The Koffler Team