1. If the toilet has standing water, pour around 120g and let it soak. If the dirt is severe, pour half the bottle at once, soak overnight, and then clean with a brush.
2. If there is no standing water in the toilet, sprinkle this product directly on the stained surface. After a few minutes, clean with a brush and water.
3. For direct drain blockages of around 2 centimeters, it may require pouring more than 3 times, and severe cases may need 7-8 applications. (The time interval between applications should not be less than 1 hour, especially severe cases may require intervals of over 4 hours.)