Has anyone been able to establish an outdoor litter tray that can be managed? After we moved last year the cats used an indoor litter tray, but now the weather has improved(!) they poo outside. For various reasons I am reasonably sure they use my garden - and a specific area in the garden. My garden isn't large and at the moment I am picking up poo when I spot it, but this is challenging as the poo is the same colour as the soil. Is it possible to train them in some way to use some sort of litter tray outdoors?? How would it work? Thanks.