Protecting Your Business: The Benefits of Fog Cannons for Small Shops and Dairies in NZ

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Under the new scheme, small shops and dairies in New Zealand will receive $4000 to install fog cannons on their premises. But what exactly are fog cannons, how do they work, and how can you get one? We’ve gathered information from New Zealand’s leading fog cannon providers to answer your questions.

What Are Fog Cannons?

Fog cannons are a security measure used to stop burglaries and robberies while they are underway. Once a cannon is triggered, it can fill a room with dense fog within seconds, limiting the perpetrator’s ability to see and making it more difficult for them to carry out the crime.

How Do Fog Cannons Work?

Fog cannons work by heating up a glycol-based solution, which then turns into a dense fog. The fog is non-toxic and harmless to humans, but it can limit visibility to only a few centimeters in front of the perpetrator. This makes it almost impossible for them to continue the robbery or burglary, as they can’t see what they’re doing.

Fog cannons are usually triggered by an alarm system or a panic button. Once the system is activated, the cannon will release the fog for a set amount of time, usually between 20 and 60 minutes.

Maintenance and Upkeep of Fog Cannons

Fog cannons require very little maintenance, but they do need to be serviced regularly to ensure they are in good working order. It’s important to have a qualified technician service your fog cannon every six months or so. They will check the system for any faults and replace any parts that are worn or damaged.

Legality of Fog Cannons

Fog cannons are legal in New Zealand, but there are some restrictions on their use. For example, they cannot be set up to discharge into a public space, as this could be a hazard to pedestrians or motorists. It’s important to check with your local council to ensure you are complying with all relevant regulations.

Fog Cannons vs Other Security Measures

Fog cannons are just one of many security measures that small shop owners can use to protect their premises. Other options include CCTV cameras, security alarms, and security personnel.

While each of these options has its own advantages and disadvantages, fog cannons are a particularly effective option for preventing burglaries and robberies. They are quick to deploy and can provide an immediate deterrent to would-be criminals.

How to Choose the Right Fog Cannon Provider

When it comes to choosing the right fog cannon provider, there are a few key factors to consider. Here are some things to keep in mind:

  1. Reputation: Look for a provider with a solid reputation in the industry. Check online reviews and testimonials to see what other customers have to say about their products and services.
  2. Experience: Choose a provider with experience in the industry. An experienced provider will have a better understanding of your needs and will be able to recommend the best fog cannon for your specific situation.
  3. Quality: Choose a provider that offers high-quality fog cannons. You want a fog cannon that is reliable and will work when you need it most.
  4. Price: Consider the cost of the fog cannon and any associated installation or maintenance fees. While you don’t want to sacrifice quality for price, it’s important to find a provider that offers fair pricing.
  5. Additional Services: Look for a provider that offers additional services, such as installation, maintenance, and repair. These services can help ensure that your fog cannon is always working properly.

One provider to consider is Watchu Security. With over 20 years of experience in the security industry, they offer a range of fog cannons and other security products to help protect your business. They also offer installation, maintenance, and repair services to help ensure that your fog cannon is always in good working order.


Fog cannons can be an effective tool for protecting small shops and dairies from burglaries and robberies. By filling a room with dense fog, fog cannons limit what a perpetrator can see, making it difficult for them to carry out a crime. However, it’s important to choose the right fog cannon provider and to maintain and upkeep your fog cannon to ensure that it works when you need it most. With the right provider and proper maintenance, a fog cannon can provide added peace of mind and security for your business.