EASY TO USE: Simple to follow DIY instructions are included in each Well Safe Well Sanitizer Kit. Pour as directed into Well & Circulate then Let Stand for 8-24 Hours and Flush until Clear. ELIMINATE BAD SMELL: Kills bacteria to provide disinfection and remove rotten egg smell or sulfur odor. Will kill sulfate producing bacteria which often causes the rotten egg odor along with other bacteria. COST-EFFECTIVE: No need for costly filtration systems or expensive well maintenance service calls. Use every 3 months for great tasting water. EVERYTHING YOU NEED: Kit contains BWI Chlorine Calcium Hypochlorite Chlorinating Pellets from Better Water Industries to treat your entire well. WATER SANITIZER: USDA food grade water purifier calcium hypochlorite tablets for drinking water. Approved and Certified by the NSF. Never use laundry bleach for drinking water applications. It may contain harmful impurities. Use only NSF 60 listed products. Well Safe Well Sanitizer Kit is a Water Purification and Well Water Treatment Kit for Killing Bacteria, Improving Taste & Odor, and Reducing Iron Bacteria Build-Up. Easy-To-Use Water Treatment for after Flooding, Natural Disasters, or other Emergencies. Use twice a year on Water Wells, Storage Tanks, or Cisterns. Water System Sanitation should be performed after any Water System Maintenance or Repair. Approved and Certified by USDA, NSF Listed Standard 60, and EPA. Well Safe Well Sanitizer Kit includes BWI Chlorine Calcium Hypochlorite Chlorinating Pellets from Better Water Industries to treat your entire well.