When we put in a new window, it wasn't properly capped. Several other companies looked and couldn't figure out how to reach the third floor. The third-floor wall is inset, the porch roof is easily-dented curved metal, and the front yard is uneven with two trees in the way. Dorian quoted a tenth of the cost of others, who would need to install scaffolding (and weren't entirely sure how even the scaffolding would fit), and for doing a complete job from the outside (inside of a partial job from inside).
Bob and Andy arrived with a very long ladder and did a beautiful job, well sealed against precipitation all around the window.
Coincidentally, squirrels had recently found another way into our porch roof, having had their previous entryway blocked during a porch repair. Bob added aluminum guards over all the tempting cracks around the perimeter of the roof, just above the eaves, as well as blocking off possible entry in the soffit. All of this was done for less than the cost of the temporary and partial solution that would have been offered by the pest-control company.