What should never be placed on the rungs of a ladder?

Placing personal items like mobile phones on the rungs of a ladder poses a significant safety risk. When items are left on the rungs, they can interfere with the climber's balance and stability. This increases the likelihood of a fall, which can result in serious injury. Additionally, having personal items on the ladder can distract the user as they manage their ascent or descent, diverting attention from maintaining three points of contact, which is essential for safe climbing.

In contrast, power tools and toolboxes might be strategically used when working off of a ladder, but they should never be placed directly on the ladder's rungs. Safety harnesses, while important for fall protection, are also not meant to be placed on rungs as they should be worn to provide the necessary support to prevent falls. Understanding how to maintain a clear and safe working environment is paramount in ladder safety practices.