Just recently had this type of countertop installed in kitchen and we love it…so far…I had a big argument with the supplier because the length of time it took to install it..so I cannot get any info from them. I wanted to know how to maintain it as far as cleaning, and I heard that Silestone quartz are the only one that have what is called Microban. Its suppose to prevent bacteria to penetrate its surfaces. I don’t know if its all of the Silestone tops or select few. Does anyone know how I can find out for sure? BTW, also had a stainless sink to go with it, and was told the only thing to clean the sink with is Comet.