One of the members asked about countersurfing so I made this video.I tried to keep it short so I'll add a couple things. First, getting the food is like playing slots in Vegas so if there are occasions when your dog has already scored something tasty from the counter, it's very hard to change what you have "trained". You've unintentionally intermittently reinforced behavior you don't want. So please see the video. You can train "leave it" and it works. I am happy to share how to do that if someone asks. I have a course on basic training and I'll make that available in this group soon. I've been very successful with teaching "Leave it" to keep dogs off the counter, but when the dog has already been rewarded, that is difficult to change. See the video below.