In what situations is static method a good practice?

Question

I have read the following discussions:

Should private helper methods be static if they can be static , and
Should all methods be static if their class has no mem

Answer 1

Generally I avoid static methods when a single instance will work fine. That single instance can implement an interface and can be mocked easily. I'm not saying never but I rarely use statics. I tell my team if they want to use a static it should be cleared by the team. Almost never is my answer.