[header] How to clean aluminum gutters [title] Lean the ladder against the gutters near a nail. [step] Locate a place on the gutters where a nail holds them to the house. It is best to place the ladder here because the gutter is supported best at the nails. 
If you place the ladder farther from a nail, the gutter is weaker and may crash. [substeps] If you can lean the ladder against the house's main structure rather than the gutters, do this to entirely avoid leaning on the gutters.