So I've got a major issue (I recommend cat lovers stop reading at this point). We don't have pets (my missus hates em) but I have a serious problem with the neighbours cats shitting in my garden and even on the lawn out the front of my place. I need to stop this happening. Shooting cats is out of the question (because it's just to bloody obvious) and I don't have access to the required hardware. What are your solutions to stop this problem (prefer permanent solutions!) ?