To determine the proper ladder size, measure the total height you would like to reach and subtract the climber’s height. This is the highest standing level of the ladder that you should select. Here are some ladder safety tips to keep you injury-free• Always inspect the ladder. Check the ladder for any loose hinges or rungs, clean off any mud, grease, oil, or other slippery material that might have accumulated on the ladder, avoid using ladders with structural defects and use the ladder only for the purpose for which it was designed (refer to manufacturer's labeling and recommendations). Keep your shoes clean. Leather soles should not be used.