Using warm soapy water is the best for daily cleaning.  There are many granite cleaners on the market that will help you if you really want to scrub and bring back that original shine.  Laticrete (formerly DuPont) stone care products are great.  They make a revitilizer spray that is excellent for weekly cleaning.  It has a bit of sealer in it as well, so it will help keep those tops shiny.

Install a decorative stone border or edging that will help hold the mulch in place.

Warm soappy water! Cleaning products takes away your granite sealer.

We use and reccommend TS&G Disinfectant & Cleaner. It is made by MIRACLE Sealants Company and you can use it safely on Tile, Stone, & Grout. It kills Molds & Mildew, Disinfects, Bacterial, Fungicidal, Cleanses, Deoderizes, & Eliminates Oders.

You night try Pine straw instead of wood mulch. It's less prone to washing.

DuraShield by StreetBond, which is a Quest Construction Building product will solve your issue with driveway cracks.  This product will need to be applied every 5yrs or so, depending on the weather conditions in your area.

Patrick McDonald

LaGrange,GA

I am sure that some work better than others.  But I think it may be a drainage issue.  I would check to see if you have good drainage off the driveay.  and, I would recommend that you do the resealing often.

Philip

Berkeley Ca