Try placing pine cones, dried nut or bean shells, broken egg shells and heavy bark mulch in your garden beds - cats don't like the feel of them on their paws. Fill 2 litre soft-drink bottles full of water - this magnifies movement on other side and deters cats.
Citrus or lemon scents (orange peels, lemon peels), garlic, ammonia, vinegar, coffee grinds, pipe tobacco, mustard, citronella, or eucalyptus all deter cats as well.
You can try orange and lemon peels (cats dislike citrus scents), the herb rue which can also be planted live, cayenne pepper, coffee grounds, pipe tobacco and various oils, including lavender, lemon grass, citronella, peppermint, eucalyptus and mustard.
Texture: Sticky paper, aluminum foil, heavy plastic or a plastic carpet runner (knubby side up) can be placed in areas you want to be off limits. Cats hate walking on these surfaces.
Build an enclosed catio. To prevent your cat from crossing paths with the other cat, you could completely enclose your garden with wire fencing to keep the other cat out. This may not be possible for everyone, so you could instead create a smaller enclosure within your garden that your outdoor cat can use.
The smell of vinegar can keep your cats away from some specific areas and items in and around the house. Vinegar can work as an effective cat repellent and training tool. Using Vinegar can make you prevent your cats from going to that your favorite furniture or any other area in the house.
As a general rule, cats are sensitive when it comes to smells, but there are a few scents they hate that might just surprise you. They can't stand citrus and as much as you might love the smell of fresh herbs, cats hate rosemary and thyme. Banana and mustard are a big no-no too, as well as lavender and eucalyptus.
And believe it or not, aluminum foil actually makes high-pitched sounds that humans can't hear but your cat definitely can. “Cats have extremely acute hearing, and the strange crinkly noise that the foil makes when touched can be irritating to their ears,” Dr. Conrad told The Dodo.
Cats Hate the Look, Feel and Sound of “Tin” Foil
Aluminum foil also has some unique properties that make it particularly alarming to cats upon their first encounter. When moved, bent, or stepped on, the foil has a very distinct high-pitched crinkling sound.
Since most cats dislike the way aluminum foil feels and sounds under their paws, it can be an effective deterrent for keeping them off of a surface you don't want them to walk on.
Use scent to keep the cats away
Cats dislike the smell of rue, lavender and pennyroyal, Coleus canina and lemon thyme. Plant a few of these throughout the garden. (Interplanting can attract pollinators and other beneficial insects too.) Cats steer clear of strong citrus scents.
Mix together lemon juice, rosemary and white vinegar - three things cats detest. Put the liquid in a spray bottle so it's easy to use around the garden. Simply spray near where the cats spend time - on planters, the patio, or even inside.
Try orange and lemon peels, cayenne pepper, coffee grounds, lavender oil, lemon grass oil, citronella oil, peppermint oil, eucalyptus oil, and mustard oil. You can either sprinkle drops directly onto your flower beds or soak a cotton wool around it and place at entry points.
"Cats are genetically hard-wired through instinct to avoid snakes," Con Slobodchikoff, animal behaviorist and author of "Chasing Doctor Dolittle: Learning the Language of Animals," said. "Cucumbers look enough like a snake to have the cat's instinctive fear of snakes kick in."
Some of the most toxic food for cats include onions & garlic, raw eggs & meat, chocolate, alcohol, grapes and raisins. Avoid feeding your cat table scraps, especially around the holidays, as these may contain potentially toxic ingredients.
Mixing Up Essential Oil Cat Repellent
Squeeze 2 drops of lemon essential oil, 2 drops of wild orange essential oil, and 2 drops of lavender essential oil to the bottle. Cats are more sensitive to scents than humans, so essential oils with strong odors, such as citrus and lavender, can help repel them.
Vinyl is a great choice to make a fence cat-proof. Cats have difficulties climbing vinyl privacy fences because they can't grip the material with their claws.
Architectural Digest advises cat parents to stick with fabrics that are "tightly woven" and to avoid "loose-weave or looped upholstery," such as linen and wool.
Scent deterrents will either serve to repel (eg Citronella) or mark a territory (eg Silent Roar). Alternatively, try orange or lemon peel, since cats are not keen on the smell of citrus. A bucket or water pistol full of water, directed near but not at the cat, will help to chase an unwelcome cat out of the garden.
A cat sees that cucumber is a threat, and when confronted with a "threatening situation," explain PAWS Chicago, cats respond with fear and anxiety. This instinctive reaction is visible when a cat is surprised by a cucumber: jumping up or, conversely, freezing in place; fur standing up; yelping and so on.
Because of their territorial nature, cats believe they actually own your house. When you close a door, it is no wonder that many cats will try to open, scratch, or attack it in every single way. They may simply find your attempt to close a door as a sign that undermines their absolute reign of the territory.
How to Keep Your Cat Off the Counter: Aluminum Foil. Both the noise and the feel of aluminum foil underneath their paws will keep cats off the countertop. Just tape some strips of foil on the edges of your countertops.
Likewise, geranium and eucalyptus plants give off an odor that cats dislike. Keep in mind that lavender, geranium, and eucalyptus are all somewhat toxic to cats; if ingested, they can cause excess salivation, nausea, vomiting, anorexia, depression, or dermatitis.
Sprinkling Epsom Salt As A Deterrent
You can also make a pet deterrent by sprinkling some Epson salt around your garden and around every plant. When you plant seeds, sprinkle some salt in a row and reapply every two weeks.