There is a cat that strolls through my garden like he owns the place. Leaves little presents in the flower borders and looks at me with contempt. Boy is he in for a shock next week when Buddy arrives!!!
Since loosing our last dog some years ago, cats visit my garden regularly, leaving many unwanted presents. A new neighbour has now brought in 19 strays !!! These are let out overnight, they do not have a garden only hard standing !! Now I am an ex hunter ! But I am being "nice", so far only non lethal legal repellents being used. Usual ones powder, sonic trips, vinegar, Jays fluid. All successful to some extent for a short time. Did however get a motion detection spray for the garden hose, that accompanied with a "wildlife camera" has done the job and I get to see them jump !! Doesn't affect Badgers, they just ignore it. Best £30 I have spent. When they get used to it I move it to another part of the garden ! No more cat poo !!! Trouble is other neighbours are now getting little presents.
Heat and motion with a sensitivity setting. Anything from a single jet for 3 seconds or up to 360 a degree arc. I have is set for about 100 degrees, so the arc gets them whichever way they go. One fault is that it does not detect "head on" to well. Great fun though.