iDrain Sodium Hydroxide, also known as Caustic Soda, is a 99% pure chemical compound with the formula NaOH. iDrain Sodium Hydroxide (NaOH) as a Drain Opener, Grease Trap Cleaner & Septic Tank Maintainer is a high-quality, versatile chemical designed for household and commercial use. Regular application in grease traps reduces the need for costly pumping and maintenance. It also helps maintain septic tanks by preventing the buildup of grease and solid waste. It should be handled with extreme care due to its highly caustic nature. Always store in a cool, dry, well-ventilated place away from children, and ensure the child safety cap is securely fastened.