What's a good, harmless, outdoor CAT REPELLENT?

The dog goes nuts when the neighbourhood cat comes under our fence. I love cats and would never hurt one. Don't want to take a chance ';snagging'; the cat with anything. But I do need to try and keep the cats out of the dogs territory.What's a good, harmless, outdoor CAT REPELLENT?
While Citrus oils, cayenne pepper and such will keep cats out of your garden, unfortunately you have to keep applying it every time it rains.





The best thing I've found is Coco Bean Mulch. A left over product from coco bean production, it smells like chocolate. It is very light, but when you put it down, and wet it, it forms a mat that is difficult for weeds to get through (a harmless fungus grows through it and increases the mat effect). In addition, every cat that has ever visited my gardens since I put it down hates the smell and the texture and stay away. I had some cats that seemed to like leaving deposits in my grass, but I crushed some of the shells, and spread the dust over the grass where it settled down and was invisible, and cats no longer even come into the garden. It seems to work for a long time; I haven't put any new mulch down for a year. My daughter uses it, and her cat only stays in the garden long enough to go in and out the door.





Unfortunately you do have to keep dogs away from it, as they like the smell and will eat it, and in large amounts, it is poisonous to them, just like chocolate is. But after a few weeks, the dogs will not try eat to it, and it will still keep the cats out.What's a good, harmless, outdoor CAT REPELLENT?
a shotgun
If you know where the cat is getting under the fence, put something sticky there. Cats hate to get sticky things on their feet. It drives them crazy. If the cat is smart, he should stop coming over. Good luck. You may also try planting some flowers that cats don't like.
pellet gun
make up your mind, do you want the cats or not, if not let the dog take care of the cat problem!
Call Humane Society or talk with the owner it is illegal for any pet to be out side without being on a leash or fence
Under the fence? Could you put a rock or something there? If you see it coming spray it with water after a few times I would think it would stay away.
If the dog won't have access to it, Try using Black or Red Pepper or even Chili powder.





Pet Smart also sells a Cat repellent spray but I'm not sure if it works or not.
buy a extra piece of fence and dig a little deeper than the fence cover it back up then take wire and and twist to old fence or try and poor more dirt to cover hole