There is a sign on the stairs prohibiting littering.

The slogan against littering is as follows:

1, garbage classification is more detailed and life is more colorful.

2. Give garbage a classified destination and give us a clean world.

3. Choose a recycling road for garbage and seek a harmonious development road for mankind.

4. Give the battery a safe home and a clean world for yourself.

5, all kinds of boxes, turn waste into treasure.

6. properly classified, garbage becomes treasure.

7, a small step in classification, a big step in civilization.

8. Classifying garbage concerns you and me.

9. Classified collection is everyone's responsibility, and men, women and children are involved.

10, waste, treasure, breath, garbage, resources, one thought.

1 1. The earth is my home, and garbage sorting depends on everyone.

12, creative life, civilization classification.

13, participate in garbage sorting, protect the earth's home and create a better world.

14, don't let her erode our beauty.

15, never lose a piece of paper, environmental protection and green every day.

16, garbage also has a home, don't go to the wrong door.

17, there is only one earth. It is my duty to protect her.

18, recycling should be done well, and there will be no trouble in the New Year.

19, garbage is the devil, it doesn't matter.

20. Environmental protection, however small, is also a kind of support.

2 1, discard virtue and pick up civilization.

22. You can throw it at will today and live in a garbage village tomorrow.

23. Let garbage return to their homes and civilization light up every home.

24. Pick up our civilization with both hands.

25. Dry and wet should be classified, harmful should be separated, resources should be reused, and life will be healthier.

26, always open my mouth and laugh, I swallowed the garbage.