Abstract: A novel cleaning composition comprises a dilutant, a wetting agent, a chelating agent, an alkaline builder, and a chlorine provider. The dilutant is preferably water. The wetting agent is alkoxylated alcohol. The chelating agent is an acrylic/maleic acid copolymer. The alkaline builder is sodium hydroxide. The chlorine provider is sodium hypochlorite. A method comprises the steps of partially filling the whirlpool tub with water, activating the whirlpool pump to circulate the water, adding to the circulating water a cleaning composition comprising a dilutant, a wetting agent, a chelating agent, an alkaline builder, and a chlorine provider, running the whirlpool pump for a predetermined time to circulate the water and cleaning composition thoroughly through the internal plumbing, and draining the whirlpool tub completely.

Abstract: A novel cleaning composition comprises a dilutant, a wetting agent, a chelating agent, an alkaline builder, and a chlorine provider. The dilutant is preferably water. The wetting agent is alkoxylated alcohol. The chelating agent is an acrylic/maleic acid copolymer. The alkaline builder is sodium hydroxide. The chlorine provider is sodium hypochlorite. A method comprises the steps of partially filling the whirlpool tub with water, activating the whirlpool pump to circulate the water, adding to the circulating water a cleaning composition comprising a dilutant, a wetting agent, a chelating agent, an alkaline builder, and a chlorine provider, running the whirlpool pump for a predetermined time to circulate the water and cleaning composition thoroughly through the internal plumbing, and draining the whirlpool tub completely.