1. Clean toilets: Toilets should be kept neat and clean by getting them washed with disinfectants because dirty toilets become the cause of many infectious diseases.

2. Water Disposal System should be proper and adequate because: 

1. It will remove the human excreta easily. 

2. There will be no need for manual labour. 

3. It is an easy and cheap method. 

4. Mosquitoes and flies do not breed over the human excreta. 

5. There are minimum chances of spread of diseases.

3. Removal or Disposal of the School Refuse: 

School refuse should be collected in containers from where it should be shifted to the municipal vans which are emptied in the far off places (away from residential area) where it is buried in the ground. Thus:

1. The school remains clean and tidy. 

2. Untidy things are removed and thrown out. 

3. Diseases are avoided. 

4. Environment remains healthy.

5. Schools give beautiful and neat look. 

6. Flies and mosquitoes do not breed. 

7. Children grow and develop in healthy atmosphere.