ABOUT THIS ITEM: Effective Bleaching Action: Vacplus toilet bowl cleaner tablets contain powerful bleaching ingredients that efficiently remove stubborn stains like urine residue, limescale, and rust stains with each flush. The bleach smell indicates effective cleaning action, ensuring a fresh toilet bowl. Sustained-Release Technology: Utilizing sustained-release technology, each Vacplus toilet cleaner tablet continuously freshens the toilet bowl for at least 15 days. It forms a protective film that helps prevent stubborn stains from adhering. Easy to Use: Before each use, it’s recommended to brush the toilet bowl. Simply drop the bleach toilet cleaner tablet into the water tank, allowing it to clean with each flush. This easy operation saves time and effort. Safe Ingredients: Vacplus toilet tank cleaner tablets are made from neutral, dye-free ingredients. They are packaged for hassle-free use, ensuring no direct skin contact and causing no damage to metal or plastic parts in the septic tank system. Long-Lasting Performance: Each Vacplus toilet tablet lasts at least 15 days, reducing the need for frequent replacements. A total of 12 tablets provides continuous freshness for over 25 weeks.