If you have a pool get these! Fashionablylatemom Cleans Water & Stops Algae: Kills harmful bacteria and prevents equipment corrosion, scale and stains. Kills and prevents all types of swimming pool algae (green, mustard, black) Long-lasting sunlight protection: Contains chlorine stabilizer to extend the life of your clean Creates Silky Smooth Feeling Water: XTRABLUE chlorinating tablets contain conditioners for silky smooth feeling water Clorox® Pool&Spa™ XtraBlue 3” Swimming Pool Chlorinating Tablets, Kills Bacteria & Stops Algae (5 LB)