I seem to have a cat or cats that visit my garden on regular occasions to use my garden as their toilet. mostly at night i think. Of course at this time of year i have soil exposed, they are digging up my new growth,and baby plants, i have tried pepper, crushed sliced /garlic,lemon /orange peel and limes, 'Cat off' lion poo, vinager, plasic rolls of wire, gravel, nothing seems to work they or it' will find a space. does anyone know if it will harm my plants? and any other ideas would be wonderful i will try anything.