So this is the flower bed at the front of our property and I'd really like to do something with it! However every time I clear it and plant things the local cats decend and treat it as one big litter tray. I have even suspected that someone has allowed their dogs to crap in it We have tried spraying orange and peppermint oil, and growing plants that deter then but it's no use. In the end I have given up and it's in the state you see now. It's an eyesore. I have considered just concreting over it, but would like to keep some sort of greenery. It's quite large...around 8ft x 4ft. I also have a chronic health condition so it would need to be fairly low maintenance. Any suggestions greatly recieved!