Guerrilla marketing: what it is, types, examples and risks

Guerrilla marketing is promotion that relies on surprise and unconventional encounters rather than traditional paid media. Instead of buying more ad space, a brand creates a moment that people notice, remember and talk about, often in a public place or online.

Where does the term guerrilla marketing come from?

The term was popularised by Jay Conrad Levinson's 1984 book Guerrilla Marketing. Levinson had been a creative director at the agency Leo Burnett. The name borrows from guerrilla warfare, which depends on surprise and unconventional tactics rather than size. The idea was that smaller businesses could compete with big advertisers by using creativity, energy and time instead of large budgets.

Why do marketers use guerrilla marketing?

Guerrilla marketing aims to make a brand memorable and to get people talking. The main reasons teams use it are:

• Cost: A strong idea can reach many people without a large media budget. The cost is mostly in creativity, planning and execution.
• Attention: An unexpected encounter cuts through in a way a standard ad rarely does.
• Word of mouth: People share surprising experiences, in person and on social media, which extends the reach well beyond the people who saw it first. See word-of-mouth marketing.
• Emotion: Campaigns that make people laugh, think or feel something are easier to remember.

The hard part is the idea. A guerrilla campaign that is not genuinely surprising or relevant is just an odd ad.

What are the main types of guerrilla marketing?

Ambient marketing

Ambient marketing places messages on everyday surfaces in the environment, such as hand dryers, petrol pumps, stairs or the cups on a golf course. The best examples use the object itself as part of the message.

Ambush marketing

Ambush marketing ties a brand to an event or property without being an official sponsor, for example by advertising heavily around a major sporting event. It is common around big sports events and can conflict with event rules and sponsors' rights. Read more in what is ambush marketing.

Street marketing

Street marketing promotes products in public places with flyers, product displays, road shows, performances and events. It can also appear on buses, subways and pavements. Using public space usually requires permission from local authorities, which takes time to get.

Grassroots marketing

Grassroots marketing wins people over one by one through personal, face-to-face contact. It is labour-intensive and hard to scale, but it can build strong, lasting relationships. Political campaigns use it heavily.

Viral and buzz marketing

Viral marketing aims to get people to pass a message on, mostly online. Buzz marketing uses high-profile moments and media attention to get people talking. Both depend on viral content that people want to share. See what is buzz marketing and examples of buzz marketing in action.

Stealth marketing

Stealth marketing promotes a product in a way that does not look like advertising, such as posts from seemingly independent accounts. When the commercial relationship is hidden, it becomes deceptive and can cause a strong backlash once exposed. Read more about stealth marketing.

Astroturfing

Astroturfing creates fake grassroots enthusiasm, for example paid reviews or posts that hide who is behind them. It is not a tactic to use. In the US, the Federal Trade Commission's rule on consumer reviews and testimonials, in effect since 21 October 2024, bans writing, buying or selling fake reviews, buying reviews that must express a particular sentiment and undisclosed insider reviews.

How can B2B companies use guerrilla marketing?

Guerrilla marketing is often associated with consumer brands, but the same thinking works in B2B when the audience is small and well defined. Some approaches:

• At industry events: a memorable stunt, installation or giveaway near a conference your buyers attend. Check the event's rules first, especially if you are not an exhibitor.
• Creative direct mail: a surprising, relevant package sent to a short list of target accounts, followed up by sales.
• Niche content: an original tool, data set or video that people in a specific industry want to share with colleagues.
• Community moments: a meetup, workshop or challenge that brings your buyers together and gives them something to talk about.

The goal is the same as in consumer guerrilla marketing: create a moment that the right people notice and share. For more on events, see how event marketing can grow your audience.

What are the risks of guerrilla marketing?

Unconventional campaigns can backfire. Common risks include:

• Misread messages: people may not understand what is being promoted, or may take it the wrong way
• Offence: a stunt that is too shocking can damage the brand it was meant to build
• Legal trouble: unauthorised use of public space, trademark conflicts and deceptive practices
• Loss of control: once people start sharing, you cannot steer the story

The best-known warning is the 2007 Boston Mooninite panic. LED placards promoting an Aqua Teen Hunger Force film were mistaken for explosive devices, which led to closures of highways, bridges and transit lines. Turner Broadcasting and its marketing agency agreed to pay $2 million, and the general manager of Cartoon Network resigned.

How do you reduce the risks?

• Test the idea on people outside your team and ask what they think it means
• Check permits, event rules and trademark issues before launch
• Be transparent about who is behind the campaign
• Have a plan for responding if the reaction is negative
• Measure the result, such as mentions, branded search, website visits and leads, so you know whether it worked

Guerrilla marketing works best as one part of a wider plan, not as a replacement for it.