Walex Commando Black Holding Tank and Sensor Cleaner | 4-Pk | 1 Year Supply | Blue Ocean Mist

Pack of 4 COMMANDO RV Black Tank and Sensor Cleaner Drop-Ins Removes residual waste build up that can cause inaccurate sensor readings and residual odors Ocean Mist Fragrance Removes odors and build-up in as little as 12 to 24 hours Super-concentrated, scientifically developed formula with natural enzymes to penetrate and break down waste and paper build-up Use to remove existing build-up or to prevent build-up accumulation Prevents holding tank problems when used preventatively every three months Made by Walex, the odor control experts Manufacturer name WWC