Mice 003 - Foundation Gaps

Once I have a feeling for where activity is the greatest, I tend to begin inspecting outside near that portion of the home for possible entry points. Sometimes, I'm lucky, and it's a giant hole. Other times, I'm even more lucky and find a random mouse dropping dyed green through bait or other evidence such as eaten seeds or other food. Unfortunately, there are no great options for sealing such gaps except expanding foam.