I have two cats of my own. Neighbour now has 5 cats and they are all pooing in our garden. I know it is them - I've seen them do it. Plus - my cats are unintentionally house cats in the main. It wasn't my plan but they just seem to hate going out. They will venture out if I force them but they don't leave our garden - just sit on the patio although will have a wander around if I am also sitting out. Also - their litter trays are always full and I know what their poo looks like and it rarely changes. They haven't been out at all today and I've gone out on poo patrol and the garden is chock a bloc with cat poo, a lot of it 'fresh'.
NDN has learning disabilities and lives alone after his parents died. Funnily enough, his garden is like a jungle whereas ours is very neat with short grass, but his cats still poo in ours. I've tried to encourage him to get a litter tray but he just says 'no'. The cats appear well looked after - they all have collars, look well fed and groomed etc.
So I am asking if anyone has any advice about keeping other cats off their grass while allowing their own on the grass if they feel like it. I am aware this may not be possible but I don't want to turn my cats fully into house cats so it is worth asking if anyone else has conquered this problem. It's a fairly big garden and the poo is all over it so I don't think putting down orange peel is a solution as I'd need about a thousand oranges!
Thanks in advance if anyone has any suggestions.