It is possible to reduce interaction with office cleaners while still being polite. Here are some suggestions: 1. **Respect and be friendly**: Greet them with a smile or a simple nod every time you see them. You don't need to have a long conversation to show friendliness and respect. 2. **Understand working hours**: Try to communicate with them when they are not busy. For example, when they are cleaning a certain area, you can temporarily leave or work quietly to avoid interrupting them. 3. **Use non-verbal communication**: You can express your gratitude and respect appropriately through non-verbal means such as waving your hand and smiling. 4. **Establish a default communication mode**: If you have a fixed need for interaction between you, you can reduce unnecessary communication by arranging it in advance. For example, designate a place to put garbage or documents. 5. **Written communication**: If you must convey certain specific requests or feedback, you can consider using notes or emails, which are both effective and reduce direct communication. 6. **Pay attention to the use of language**: If there is something that needs to be communicated, try to use polite and brief language, and avoid using complex topics or long conversations. Through these methods, you can reduce direct interaction with cleaners without being impolite. At the same time, being polite and respectful at all times is an important part of a friendly work environment.