Any good ideals on how to deal with..

Keep it legal and keep it friendly. Kill them with kindness. It works. Make sure that you give them no good cause to call the law on you. Soon the local cops will get real tired of responding and wasting their time on their complaints. The sign was a good start. Each time you see them....smile and greet them in a friendly manner. Act as if they do not bother you at all. It will get them more than anything you can do. I had a neighbor once 8 times my body weight that for whatever silly reason ...hated me. Each day I smiled and said hi...told her to have a great day. She tried all sorts of things....cranking music and making noise to try to get to me. she eventually got bored and it ended.

It's easier said than done, but you may be better off just ignoring them or trying to make friends with them. If you and they are unwilling to move, you are stuck with eachother- you might as well try to make peace.

well you going to do stuff like that then they are going to do more stuff, and around and around you go. just be a good neighbor and let them do what ever they want. let them think they have won, and turn the othier cheek lol. they will soon lose any though about what you guys are doing. and you can get on with living in a happy home.

Neighbors can be pains we moved from the country to a town and i hate it no one minds their business and everyone want to do the same thing you are doing. good luck with our neighbor they sound real pains