Watch for Leaning or Unstable Fence Posts One of the first signs your fence may be failing is when posts start to lean or wobble. Fence posts anchor the entire structure, so any instability here can quickly lead to bigger issues. Check posts regularly by gently pushing on them. If they move easily or lean noticeably, the soil around them may have eroded or the post may be rotting. In Katy’s clay-heavy soil, water pooling around posts can cause them to loosen or rot faster. W