Botany Bay Pebbles are naturally occurring river or beach pebbles.Botany Bay Pebbles may be installed commercially and residentially, on interior or exterior vertical areas, in wet or dry locations. It may be installed on floors residentially. It can also be used as an insert around the edge perimeter of a room. Botany Bay Pebbles can be used in submerged installations. The pebbles have not been tested for chemical resistance; therefore use in pools is at your own risk. There is no warrantee/guarantee as to the performance in areas where acids, chlorine, bromine, etc. will be used.