I was just listening to Sliced Bread on Radio 4 about kitty litter. The woman who was being introduced as wanting to know which type of litter was best to use said that she was new to having to deal with kitty litter as this was the first time she'd owned an "inside cat". The implication was that she'd previously owned "outside cats" and didn't ever provide a kitty litter for them. I was quite surprised by this and wondered how common it is that cat owners just expect their cats to defecate on other people's property. My neighbour has two cats who roam around outside, but have a litter that they use inside. (They also poo outside.) I don't have a cat or dog, but I do have a front and back garden where I grow fruit and vegetables. And it's cost me quite a lot to cat-proof my soil with scat mats and netting so that the neighbourhood outside cats don't use it as their toilet. Are cat owners comfortable with that or do they think their cats are considerate and only poo on wasteland rather than in their neighbours' gardens?