Why is there always some water left in the toilet

That water is used to prevent the smell from the pipes from coming back, and you can imagine that without that water, your toilet is connected to the septic tank, and the smell of the septic tank will drive straight into your bathroom.

This is related to the gravitational pull of the earth, in the northern hemisphere underwater leak is counterclockwise rotation, in the southern hemisphere underwater leak is instantaneous clockwise rotation, at the equator water is directly into the sewer, this has been done by someone has done such an experiment.

Only those who have done this business will understand the hardships of this business. As an apprentice, you have to understand the master, this industry, there is no time to take care of the family, there are no holidays. Everyone goes to eat when they rest and have fun, and when the restaurant closes to rest. >>>More

The principle and process of toilet suction cups:

When you lift it upwards, a certain vacuum can be formed, which loosens the clogged items underneath so that the water can circulate and carry away the clogged items. >>>More

This is a carpenter ant, and time will have to find someone to fix it. There are strong construction workers who repair it. It is available in many local markets. It's only one or two hundred. Hope it helps.