We are Ray and Colleen, the original stone mat makers, living on the beach north of Hokitika where we collect the stones to create our mats.
Your stonemat should give you years of enjoyment. To clean, lay on a flat surface and run tepid water containing mild detergent over the mat. Scrub with a soft brush. Rinse and lay flat to dry. Do not use hot water as it will soften the glue. In the event of a stone coming loose, it may be attached with an outdoor weatherproof adhesive.