Take your clothes off Min, they will see that you really are just a red M&M, & they will RUN!
Other than that, my husband kicked them back down our long, winding, steep driveway thorugh the woods that is well marked. It has signs that say things like "Mean f&^%$#* Guard Dogs", Get out or get BIT", & there is a 6 ft. skeleton hanging from a tree. I guess it wasn't specific enough. I guess they need their own sign, No Tresspassing, No soliciting doesn't apply. He seriously did this!