How often do you inspect your properties?

[Bjorn Ahlblad]

My lease says I can inspect twice in one year. I think once a year is enough if you screen well, although I did have a serious issue recently in a duplex that was caused mostly by not inspecting, and inadequate screening of an inherited tenant-that will not happen twice!! Hence the question-how often do y’all inspect your properties and do you just drive by-or enter?