How to deodorize public toilets?

First, determine the source of the smell,

Of course, the toilet smells, but flushing the toilet in time and taking a step forward will largely eliminate the smell.

So in my experience, some objective facts may be

1, the toilet material is not good, or the water pressure is not enough, and it is easy to hit the stone.

2. There is not enough water for flushing the toilet, or the toilet structure is not well done, which causes the water to be polluted and smells bad.

3, poor ventilation, and smoking, smoke smell-smoke has tar, very sticky, and then attached to the wall has an unpleasant chemical composition, which has been stinking.

4, civilization issues, put up more slogans.

Hope to adopt ~