We had kids not even in costume, come to our place. So instead of giving them candy , we put rocks in those little pastic things you get out of gumball machines and gave those to the kids and adults not in costume. yeah adults.. TRICK OR TREAT they got tricked LOL....
That's an awesome idea. I'd do that if I didn't think the bastards would remember me and come back later and vandalize my house.
I never really get any "rude" trick or treaters per se, but I do get at least a dozen or so kids every year who just sorta stand there with their bags open without even saying "trick or treat" or at least "Happy Halloween". Usually it's the kids who are a little too old to be trick or treating, but they still want the candy so they do it anyway. Sometimes the kids who don't say trick or treat are busy laughing or talking about my decorations, and I usually get at least a few kids who are polite enough to compliment the decorations, so they get a pass. Last year I did get a couple of smartass kids who felt like they needed to tell me that my scarecrow "wasn't real" (duh) and asked if my Hallowindow display was "just a video". I played stupid and acted like I didn't know what they were talking about.
I do make a point to pull the candy bowl away from the greedy kids who want to stuff their hand in there and take their own candy. That doesn't happen too often, but when it does I just snatch the bowl back and say "Hang on, back up and I'll pass out the candy".
As for the kids who don't even bother dressing up (that's also usually the older kids who probably shouldn't be trick or treating), I just give them crap about their lack of costume, or tell them "sorry, no costume, no candy" then give them candy anyhow.