What is the 3 bucket system for cleaning?

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Tags

1. #tasks
2. #rinsing
3. #third
4. #sinks
5. #expanded
6. #include
7. #separate
8. #water
9. #system
10. #namely
11. #sanitizing
12. #shall
13. #containing
14. #solution
15. #three
16. #bucket
17. #washing