Free-roaming is a problem in many residential areas dogs and cats, If, for example, the neighbor has animals that he lets roam freely in his garden or on the street, these animals can of course also get into your garden.
Dogs in the garden
But this is a thorn in the side of some people, especially when the animals use the garden as a toilet. You have to make a difference here. If the animal is a dog, you can forbid the neighbor to let him run around freely.
Cats in the garden
This is different with cats. If the usual number of cats (two per household) goes on an exploration tour and crosses your garden, maybe even does your business there, then there is nothing you can do about it. Even if you know who the cats belong to.
If there are more than two, then things look different again. Otherwise, courts judge that there are no limits to free-roaming cats. So you have to approve the visit to the garden.