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One of the most common sources of hostility towards feral cats are people who don't want them in their yards, gardens or other parts of their property. The best approach often is to respect their views and offer to work with them to keep the cats out. Below are numerous products and techniques worth attempting.
Content adapted from Neighborhood Cats, used with permission.
Ultrasonic devices (CatStop)
CatStop contains a motion sensor and, upon being triggered, emits a high-frequency alarm imperceptible to humans but highly annoying and startling to cats. The key with CatStop and other ultrasonic devices is to make sure you have enough of them for the size of the area you're trying to exclude the cats from. CatStop reportedly monitors 280 square feet.
IndyFeral has had good results using the CatStop which is manufactured by Contech. If needed, multiple CatStops can be used together to cover a property line. One device is placed at each end of the property line and then positioned so that their motion sensors face each other. Whenever a cat crosses the line, one of the devices goes off. CatStop can also be mounted high up off the ground and positioned to "cover" a car parked below, keeping cats off the vehicle. It can be used in any weather, though the battery will likely need to be replaced more often in cold temperatures.
Order CatStop directly from Contech for $59.00. AC adaptor available for additional $20.00. Click here or call -1-800-767-8658
Buy it for less through Safe Pet Products for $48.00 ($44.90 for two or more; AC adaptor for additional $16.95 per unit). To order (and view installation instructions), Click here. Or call 1-888-977-7387.
Motion-activated sprinklers
Motion activated sprinklers use infra-red to detect when an animal enters a defined territory. When a cat enters the infra-red field, the sprinkler shoots out a burst of water for a few seconds in the general direction of the animal. The effect is to frighten the cats rather than soak them, but they quickly learn not to enter the area. After a while, the sprinkler becomes unnecessary. It doesn't work in winter conditions, as the water will freeze, but if you introduce the device in warmer weather, by wintertime you'll have trained them.
The Scarecrow, made by Contech, costs $89.00 if you purchase it directly from Contech. To order, click here or call 1-800-767-8658
Buy it for less! Check out the price for The Scarecrow at Safe Pet Products (currently $69.95, $65.95 for two). To order, click here or call 1-888-977-7387
Another motion-activated sprinkler is Spray Away, manufactured by Havahart (currently $67.79). To order, click here and scroll down the page.
Scent repellants
Both naturally-based and chemically-based scent repellants are available. The chemical products contain the active ingredient methylnonylketone, which the manufacturers warn should not be applied to food crops. Reports on the effectiveness of scent repellants are mixed, sometimes working quite well and in other situations, not at all. Repellants should be sprayed or placed around the edges of the yard, the top of fences and on any favorite digging areas or plants. Sprays need to be replenished after rain.
Naturally-based products include:
The Coleus Canina plant, a weed originating in Europe, is known as the "Scardy-Cat" or "Pee-off" plant because it emits an odor offensive to cats (but not to humans) and deters their presence. Recommendation is to plant them three feet apart around the area to be protected. You may need to order cuttings or seeds from a nursery or dealer. Do a Google search for the plant to find a dealer and compare prices - one dealer when last checked is Rosy Dawn Gardens. WARNING: There are many varieties of Coleus plants, so make sure you order the correct one - Coleus Canina.
For protecting gardens or flower beds, common household items may be effective, including the herb rue, either planted or sprinkled in its dry form. Other suggestions for garden areas are orange and lemon peels (cats dislike citrus smells), cayenne pepper, coffee grounds, pipe tobacco, lavender oil, lemon grass oil, citronella oil, peppermint oil, eucalyptus oil, and mustard oil.
Havahart Get Away dog & cat repellent uses capsaicin pepper and oil of mustard as its active ingredients. It repels by both taste and odor, has a lemon scent, lasts 7-10 days and needs to be reapplied after rain or new growth. Model 5400; 32 oz. bottle sells for $14.16. To order online, click here.
The most popular chemically-based repellant is:
Reppers - this product can be purchased as grains placed in a plastic "evaporator" which in turn is planted into the ground. Or it's available as a spray. The product is no longer distributed in the United States, but can be purchased from Pets First, a Canadian company. Call 1-800-738-7178.
Prices are: a kit containing two evaporators and grains ($32.99 Canadian), refills of grains ($19.99 Canadian), and 400 ml spray when available ($15.99 Canadian).
Physical barriers to digging
Gardens and flower beds can be protected from digging through a number of means:
Cat Scat from Gardener's Supply consists of plastic mats that are pressed into the soil. Each mat has flexible plastic spikes and is cut into four pieces. The spikes are harmless to cats and other animals, but discourage excavation. Item No. 31-954 is $21.95 for a set of five, $19.50 per set when ordering two or more.
Online: click here
Phone: 1-888-833-1412
Cover exposed ground with rough surfaced rocks.
Take branches from a thorny plant, like a Rose of Sharon tree, and lay them on the ground in a lattice-type pattern, then plant flowers and seeds in the openings. Regular lattice type fencing used in this way will also discourage digging.
Make an Outdoor Litterbox
A sandbox will tend to be an attractive place for cats to do their thing. Take a very large Rubbermaid plastic container and fill it with regular "kiddie sand box" sand. If you can, put a couple of pieces of the cats' poop in it to attract them. The cats will enjoy digging in the fine sand and will shift to using it. Scoop occasionally and once a month or so, dump and replace the sand.
If you want to be extra neat, use a large Rubbermaid storage container for the box, filling the bottom with several inches of sand. Then cut a door in one of the sides, above sand level and approximately 8 x 8 inches. Keep the container covered.
To be even neater, take the Rubbermaid storage container, turn it upside down and cut a hole in the side. Place a normal litterbox with regular litter inside the container.
Another method is described by Audrey Boag of the Rocky Mountain Alley Cat Alliance: "For caretakers in the right circumstances, cats love a pile of peat moss (4 feet square, 8 inches deep) in a corner of the yard, replaced once a month or so. It's very cheap, easy to handle and dispose of, keeps the smell down, and is far more attractive than the neighbor's garden."
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