I have a front gravel garden which had been kept clean and tidy for my kids, until three weeks ago, I found a dog poo laying right in the middle of the garden entrance. I picked up and put in my own bin, because I didn't know what else to do. But 3 days later, another poo appeared further into my garden, on the side. I cleaned up again. 2 days later, it happened again. So within the last 3 weeks, the disgusting stuff appeared 6 times, either late in the night, or early in the morning, when nobody is around. I used citrus toilet liquid, vinegar, dog repellent powder, trying to form a barrier. None of those worked. I rang county council, they said it's in the private owned area, so they couldn't do anything about it. There are some other ways to solve the mistery, like setting up a camera, like staying awake all night to keep an eye, like putting a gate up. But they are not easy, not cheap. I wonder, is there any other way to keep the dog off my garden?? Any effective way please??