Purchased stone for new driveway, side and back patios from a very reputable manufacturer family owned and operated and two years later went back to purchase sealer. They sold me Seal King brand sealer in five gallon pails at approximately $160 per pail. The stone manufacturer recommended this sealer for use on their stone. Followed all the manufacturer's instructions in the application including using Seal King brand cleaner to clean up a couple of oil stains. Cleaner did not work well - used an entire can on just a few stains and stains were still visible. Following the application of Seal King Sealer in late summer, driveway looked great : wet look, colour of stone enhanced, oil stains no longer visible due to darker colour of stone. By early Spring the driveway stone had returned to a dull faded colour and oil stains were once again visible. Paid $1, 000 for products and three days of labour to prepare driveway (power wash, clean out old joint sand and apply new EnviroSand) but wet look on driveway disappeared within seven months (September - March.). Furthermore new oil stains appeared on stone and absorbed by stone which means not only did the stone no longer have the wet look but it was not sealed. Addressed issues with owner of company and reply was "no guarantees." Total cost for having wet look on stone and possibly sealed : $1, 000 divided by seven months = $142 / month not counting days stone was covered with snow or already wet .