So. I live in a neighborhood that is swamped with door to door sales people (and Jehovah's Witnesses), which is strange because if you saw my neighborhood you'd probably lock your doors or quickly look around to see where your children are. It's not the best neighborhood but I love it because the best people live in it.
Usually I would listen to them very politely and then apologize for waisting their time and deliver the painful truth. We have no money... or really extra money to spend on your expensive gadget. Well, I did that for years until I met an incredibly rude sales person. That was the end for me and I wrote my first "No Soliciting" sign.
I always thoughts those NS houses looked cold or someone mean lived there, but now I know the truth. They are actually just doing the sales person a favor by not wasting both of their lives away.
This is the sign I made. It hasn't faded (surprisingly) but it has warped over the years. All though it doesn't keep religious solicitors away it does work on all the others. So if you want to become one of those NS houses but don't want to look white trash or like you belong in my neighborhood to the horror of your HOA -