Which of the following is NOT a proper way to maintain a ladder?

Using a ladder for purposes other than its intended use is not a proper way to maintain it because it can lead to unsafe conditions and increase the risk of accidents. Ladders are designed for specific tasks, and using them for something they were not designed for can compromise their structural integrity and the safety of the user. For instance, using a ladder to support heavy loads or as a scaffold can result in tipping or breaking.

In contrast, regularly cleaning and inspecting a ladder for wear helps to identify any damage or wear before use, ensuring that it remains safe and functional. Storing a ladder in a dry location prevents moisture-related issues like rust or rot, which can weaken the ladder. Ensuring that all parts are functioning correctly includes checking hinges, locks, and rungs, which is essential for safe operation. These practices collectively contribute to the safe and effective use of a ladder.