Last winter they were all over inside our house. I'm pretty sure they came in on the indoor plants that were summering outside. I called the extension service and they recommended squishing them to get rid of them. FL, I did not try the stink bug traps, but I will this year if we have the same problem. Debbie, last year I read that, as the weather gets cooler at night, they look for the warmest part of the house to attach to. And that they are attracted to light colors. Probably explains them all over your gutters.