Skill-it Algaecide is EPA registered and works with most common swimming pool chlorine and non-chlorine sanitizers to effectively remove and eliminate algae. It eliminates the majority of resistant colors and types of algae. The product has additional advantages as customers have noted that bees and wasps dont seem to like to be around water treated with Skill-It. It does not stain and is non-metallic. Its a user-friendly product that doesnt require adjustment to the water pH before applying. Customers find Skill-it Algaecide to be an important tool for fighting resistant, persistent algae over the long term. The product can be reapplied if the initial application doesnt completely eliminate the algae problem. Skill-it Algaecide can be added by itself directly to the pool water or water circulation equipment to eliminate algae.