![]() ![]() Some units also use solar power to trickle charge an internal battery, which does away with the need for a power supply. However some modern units work from a small reservoir of water, doing away with the need for a hose. This means a little more setting up is required. The disadvantage of this type of deterrent is that it requires a connected hose for the water, and also a power supply to power the motion detector and the jet of water. ![]() Your garden would be protected from cats, dogs, deers, critters and vermin. The advantage over ultrasonic units is that all animal are deterred, even if they are deaf. The sound and the water act as a double deterrent to cats and other animals who immediately run off and remember not to come back again. When the unit detects movement it automatically sprays a jet of water for a few seconds in a small arc. Water Cat Repellents use a short sharp spray of water to scare cats off, rather than the ultrasonic sound emitted by other devices. They do work though, read proof and see them in action in our Do Cat Repellers Work page. The chances of this are slim however, making ultrasonic repellents an inexpensive solution for many gardeners to the issue of cats fouling their gardens. The only caveat with these detectors is obvious - a cat must have average hearing to be affected, deaf cats would not notice the tone and could still be troublesome. Some versions come with a 9v adapter option, or it is possible to hand wire battery versions to work with an inexpensive power adapter. Ultrasonic devices require power to operate and this is usually by a 9v battery. After a short period they will stop coming in to the area, not just for a while, but for an very long period. Unable to withstand the noise they move on to other areas, leaving your garden cat free.Īll ultrasonic repellents work by sensing movement, which in turn activates the ultrasonic tone, lasting for a few seconds.Ĭats remember this uncomfortable experience and quickly learn that it will happen every time they visit area. You can follow any responses to this entry through the RSS 2.0 feed.īoth comments and pings are currently closed.Ultrasonic Cat Repellents work by emitting a high frequency tone that cats and other animals find uncomfortable. This entry was posted on Thursday, July 2nd, 2009 at 4:35 pm and is filed under Gardening, Home & Ranch. I may need 3 or 4 sensors, since my area is 100 feet long, but I’ll start with 2 one in my raised bed garden, and one by my apple tree and raspberry bed. I’ll put them at opposite ends of my garden & orchard. I haven’t had any deer yet this summer, but I know I will in the fall when they come for apples and pears. I think I’ll try two Contech scarecrows for my yard. The Contech scarecrows run $58.49 each (on Amazon), or $175.47 for three sprinklers. My system cost about $87.00 and I have three sprinklers covering my garden. Keith believes the Scarecrow sensor will pick up movement within 25 feet, and will read an arc of 270 degrees (3/4 of a circle). The other night I was looking out when the system went on and the deer ran out into the field and stopped, then it sauntered off.” By the way, the Scarecrow runs off of a 9 v battery so no electric cords. ![]() Running the electric cord to the box across the yard is not good if you mow your lawn. I am replacing the cheaper ($7) Rainbird sprinkler with the all brass version ($17) because the cheaper one is, well, cheap and doesn’t work very good. My system went OK but in retrospect I think I would just buy the Scarecrows from Amazon (in fact I just ordered one today). ![]() His motion sensor also has a sensitivity setting for large or small animals,depending on what you’re trying to keep out. Position the sensor so that it faces outward (away from what you want to protect), and so that nothing is blocking the sensor. One used electric cord to power the system.Three Rainbird sprinkler heads and pvc pipe with fittings.One plastic box for housing (water tight).24 v transformer and one sprinkler valve from Lowes.More info about the product on Contech Electronics website. You can find the commercial motion-activated sprinkler on Amazon, made by Contech Electronics. What follows is from the text of his email: From Keith Blaylock: During the discussion about deer fencing at our Root Cellars, Greenhouses & Gardens slideshow in June, Keith mentioned his “non-fence” system, and agreed to forward information on his system for our website. ![]()
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