HTH Super Algae Guard 60 Algae Control features a powerful 4-in-1 formula designed to kill and control green, black, and yellow algae growth effectively. This non-foaming liquid solution is 60% strength, allowing you to swim immediately after application. Its active ingredients include alkyl dimethyl benzyl ammonium chlorides (30%) and alkyl dimethyl ethylbenzyl ammonium chlorides (30%), with other ingredients making up 40%. The formula is compatible with salt systems, making it versatile for various pool types. The product comes in a convenient 1-quart bottle, providing an easy-to-use algae control solution that keeps your pool clean and clear. Model Number: 67064