How to use? Put one piece of toilet bowl cleaner(do not remove the plastic), and put inside the toilet bowl for at least 30minute before first flush/use (1 Piece) Magic Auto Toilet Bowl Cleaner Blue Bubble Flush Easy Bathroom • Automatic Toilet Bowl Antibacterial Cleaning Tabs Cleaner Deodorizer – Blue • Freshness in Every Rinse • It can clean the dirty of the tank, rim, inner wall, water pipe and other parts of the toiler thoroughly. • Effective in killing bacteria and germs of the toilet and sewer pipe, preventing bacteria from toilet and toiler sewer infected alternately. • No harming to surface of toilet bowl or hose • Come in individual packaging, keep clean & tidy, hassle-free • Please remove the outer plastic packaging, & place the cleaner in the place that far from the water in & out valve in the toilet water box Package Include: 1 piece Toilet Bowl Cleaner Deodorizer with Individual PP Packaging Material: cleaners, fungicides, high-molecular polymer, perfumes Usage: On Normal Usage, Approximately 10 flashes depends on water quality. Note: Please allow 1-3cm measuring deviation due to manual measurement. Due to the fact that every computer monitor has a different capability to display colors and that everyone sees these colors differently, actual color might vary slightly.