This is extremely dangerous advice. Refactoring for the sake of cleaning up code invariably introduces bugs. Decent code coverage and automated tests can reduce

This is extremely dangerous advice. Refactoring for the sake of cleaning up code invariably introduces bugs. Decent code coverage and automated tests can reduce the potential of this, but not guarantee it. The boy scout rule is, do not leave it worse than you found. That includes breaking the software by performing an unnecessary rewrite.