Pool Maintenance PoolStone For Poles PCP3910. Now cleaning your pool is even easier with the PoolStone Pole Attachment. Attach it to any standard telescopic cleaning pole to reach the bottom of your pool or clean border tile without ever getting in. PoolStone environmentally friendly cleaning blocks provide powerful, effective, and safe cleaning for pools and spas without the use of chemicals. PoolStone removes hard water stains, rust, mineral build-up, mold, and mildew stains with ease. PoolStone is made from recycled materials and saves the equivalent of 1 glass bottle from being added to landfills per stone.