That's very sad. I wouldn't do it here unless I knew who was coming. I said in another post yesterday that I heard a group of kids - maybe aged 10 or so - chanting "We want treats" all the way down the Ondine Road. And they had their parents with them! It would be much more fun to have small children come to the door with their parents in the background, especially children that you know. I don't think it's normal to say please, as they say Trick or Treat when you open the door, but they should certainly say thank you. It's also fun to admire the costumes, especially if they have made an effort. A friend of mine who lives in the States says that some parents from other areas drive their kids to his area in order to trick or treat. That is wrong, weird and greedy. He said he has stopped opening his door.