You know it's officially fall when the 'stink bugs' try to come inside.

 

Sorry that they are blurry but here is the description of what I'm talking about.

In short: 

"Homeowners often find stink bugs inside during the late summer months as well as autumn, when temperatures outside start to drop. Finding large numbers of live or dead stink bugs is a telltale sign of an infestation. Stink bugs will turn up on sunny sides of homes where they warm themselves. Growers often detect an infestation by the damage they cause to their crops."