Rather than use an ultrasonic burst like ultra-sonic cat repellers, cat sprinkler devices will spray water towards the offending cat or other garden pest. Cat sprinkler repellers (sometimes called a water scarecrow or a scarecrow motion sprinkler) will detect cats using passive infra-red detection before spraying a burst of water in that direction.
The major benefit of these devices is that they’re very effective and non-discriminatory – they’re not just cat scarecrow devices – they will spray cats, foxes, dogs, birds, deer and even people (so beware!). There are several models to choose from. Probably the most popular sprinkler system is available through the Amazon.co.uk network of sellers: the Contech ScareCrow Animal Deterrent
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Sprinkler repellers cost around £50 each and are great for protecting pond areas from a variety of different garden pests including: cats, foxes, seagulls and other large birds that will happily help themselves to the fish from your pond). Also great for protecting newly seeded areas such as flower beds, vegetable patches and newly sewn lawn areas – smaller birds like nothing more than to feast on freshly sewn grass seed, after all. This will help them think twice. Cat repellers like this can protect an area of up to 1200 sq/ft.