Removes Filter Scale & Dirt: SpaGuard Filter Cleaner is a powerful cleaning agent that is specially designed to remove scale buildup, metals and dirt from your filter. Promotes Better Filtration: SpaGuard Filter Cleaner promotes better filtration and improves water circulation by removing body oils, dirt, grime and scale from all types of spa filters. This lengthens filter cycles and reduces chemical maintenance costs. Easy-To-Use Sprayer Applicator: It allows either a quick spray cleaning or deep cleaning soak of your filter. This product is designed to break apart the scale buildup, oily residue, and dirt from your filter leaving it clean and ready to keep your hot tub pristine. Optimum Performance: The SpaGuard line of cleaners and clarifiers improves the water’s appearance, protects spa surfaces, and keeps filter working at optimum performance. Tested and Proven Effective: SpaGuard products are known for delivering reliable results and making spa care less complex. SpaGuard carries an extensive line of spa solutions that match your unique needs.