Does anybody know of a product you can put down contained by garden to stop cats messing.? Can anybody help, its lately i keep getting cats pooing contained by...

Can anybody help, its lately i keep getting cats pooing contained by my front garden, they dont really do it on the grass, its more on the edges of my garden and a bit where i enjoy some pot plants right near my front door, its really getting on my nerves, within was poo everywhere when i looked today any thinking would be a great help appreciation.
My Eucalyptus trees are dying - UK?
Answers:    Use orange strip. It really works. Getting a dog is a useless solution. I have one and he's worried of cats!!lol
Seriously, spread orange outer layer around your plants and pots, they hate the stuff and will walk elsewhere
Hyacinth bulbs?
This may just be an antediluvian wives tale, but my grandmother other put moth balls contained by her mulch and it seemed to save the neighborhood cats away.