What are some things to know to keep roaches away?

My place must be infested. Today alone I saw like 4. In 3 cases they were on places where I left out items I had rinsed to air-dry. It's like these vermin will appear out of thin air quickly as soon as they sense there is even a tiny drop of water in the apartment. So I think today taught me that you never leave even a drop of water anywhere. Thinking it will air dry. Nope. If you spill even a small amount of water or rinse anything, dry it up ASAP with a towel or paper towel.

Cause those roaches come quickly and surprise you.
What are some things to know to keep roaches away?
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