Great question!

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Short answer .... the only humane, ethical and environmentally responsible solution is ultrasonic generated technology specifically geared towards primate (monkey and baboon) deterrence. 

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The longer answer .... well let's look at what is available out there ...

 

One Stop Shops

The majority of primate deterrent suppliers "sell" directly to the public at large via independent online sales platforms (Amazon, Takelot, etc) claiming they can deter primates (among a host of other pests) with their constantly fluctuating 20k to 65k Hz emitting devices but who have no web site presence of their own.

 

Why?

 

They are only interested in a quick, no nonsense sale, claiming wide pest deterrent coverage ... some from an ant to an elephant! Purchase these at your peril ... they rarely work on primates and if they do .. then not for very long.

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If you don't like money then these are a winner and more so when they are 'imported' as the CPA (Consumer Protection Act) will have limited authority over their lack of performance.

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Fixed Frequency Deterrent Devices

These devices (usually 18kHz but do tend to drop as low as 16kHz) are a decided improvement over the above lot but when it comes to primates a fixed frequency does allow for some degree of them getting acquainted to the fixed range and then returning to the scene of the crime over time.

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Fluctuating (But Restricted) Frequency Range Deterrent Devices

Now you are on safer consumer ground but only if you are dealing with a locally based supplier (from a CPA perspective).

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Fluctuating frequencies of between 20 and 22k Hz together with oscillating sound waves (or sound pressure) at between 80 and 95 dbs' is the way to go to get optimum results. At these deterrent levels primates are more likely to give a protected zone a very, very wide berth.

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Monkey Bizness utilises the foregoing technology and is the only primate deterrent supplier in the local market that does not guarantee a 24/7 primate-free environment post residential device installation (see why by going to t's and c's on Residential pages) whereas competitors choose to remain 'silent' when it comes to the performance expectations of their devices. Conversely, when it comes to industrial sites Monkey Bizness can deliver a monkey-free environment provided multiple barriers to entry are accepted by the client.

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Trust that the foregoing information enables potential primate deterrent consumers to make an informed decision. Let's chat if you require any further insight or technical clarification.